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23331022240 = 2551673372591
BaseRepresentation
bin10101101110101000…
…110010010110100000
32020012222102201201211
4111232220302112200
5340240220202430
614415040435504
71454110263001
oct255650622640
966188381654
1023331022240
119992832369
124631618b94
13227a82c306
1411b48591a8
159183ea72a
hex56ea325a0

23331022240 has 96 divisors (see below), whose sum is σ = 55635600384. Its totient is φ = 9245429760.

The previous prime is 23331022217. The next prime is 23331022249. The reversal of 23331022240 is 4222013332.

It is not an unprimeable number, because it can be changed into a prime (23331022249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9003345 + ... + 9005935.

It is an arithmetic number, because the mean of its divisors is an integer number (579537504).

Almost surely, 223331022240 is an apocalyptic number.

23331022240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23331022240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27817800192).

23331022240 is an abundant number, since it is smaller than the sum of its proper divisors (32304578144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23331022240 is a wasteful number, since it uses less digits than its factorization.

23331022240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110 (or 3102 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 23331022240 its reverse (4222013332), we get a palindrome (27553035572).

The spelling of 23331022240 in words is "twenty-three billion, three hundred thirty-one million, twenty-two thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 167 334 337 668 674 835 1336 1348 1670 1685 2591 2672 2696 3340 3370 5182 5344 5392 6680 6740 10364 10784 12955 13360 13480 20728 25910 26720 26960 41456 51820 53920 56279 82912 103640 112558 207280 225116 281395 414560 432697 450232 562790 865394 873167 900464 1125580 1730788 1746334 1800928 2163485 2251160 3461576 3492668 4326970 4365835 4502320 6923152 6985336 8653940 8731670 9004640 13846304 13970672 17307880 17463340 27941344 34615760 34926680 69231520 69853360 139706720 145818889 291637778 583275556 729094445 1166551112 1458188890 2333102224 2916377780 4666204448 5832755560 11665511120 23331022240