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23450980 = 2257191877
BaseRepresentation
bin101100101110…
…1010101100100
31122010102200211
41121131111210
522000412410
62154345204
7403221130
oct131352544
948112624
1023450980
1112268083
127a2b204
134b21127
1431863c0
1520d368a
hex165d564

23450980 has 48 divisors (see below), whose sum is σ = 56641536. Its totient is φ = 7989120.

The previous prime is 23450971. The next prime is 23450981. The reversal of 23450980 is 8905432.

It is not an unprimeable number, because it can be changed into a prime (23450981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26302 + ... + 27178.

It is an arithmetic number, because the mean of its divisors is an integer number (1180032).

Almost surely, 223450980 is an apocalyptic number.

23450980 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 23450980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28320768).

23450980 is an abundant number, since it is smaller than the sum of its proper divisors (33190556).

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

23450980 is a wasteful number, since it uses less digits than its factorization.

23450980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 23450980 is about 4842.6211910493. The cubic root of 23450980 is about 286.2334150050.

The spelling of 23450980 in words is "twenty-three million, four hundred fifty thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 191 382 764 877 955 1337 1754 1910 2674 3508 3820 4385 5348 6139 6685 8770 12278 13370 17540 24556 26740 30695 61390 122780 167507 335014 670028 837535 1172549 1675070 2345098 3350140 4690196 5862745 11725490 23450980