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23230312020 = 22325590321863
BaseRepresentation
bin10101101000101000…
…100110111001010100
32012221221221010021200
4111220220212321110
5340033424441040
614401042112500
71451445252126
oct255050467124
965857833250
1023230312020
1199409a6283
12460394b730
1322629ca476
1411a5321216
1590e655630
hex568a26e54

23230312020 has 72 divisors (see below), whose sum is σ = 70480440576. Its totient is φ = 6193417152.

The previous prime is 23230312013. The next prime is 23230312043. The reversal of 23230312020 is 2021303232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23230311984 and 23230312002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1051609 + ... + 1073471.

It is an arithmetic number, because the mean of its divisors is an integer number (978895008).

Almost surely, 223230312020 is an apocalyptic number.

23230312020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23230312020 is an abundant number, since it is smaller than the sum of its proper divisors (47250128556).

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

23230312020 is a wasteful number, since it uses less digits than its factorization.

23230312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27781 (or 27776 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 23230312020 its reverse (2021303232), we get a palindrome (25251615252).

The spelling of 23230312020 in words is "twenty-three billion, two hundred thirty million, three hundred twelve thousand, twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 5903 11806 17709 21863 23612 29515 35418 43726 53127 59030 65589 70836 87452 88545 106254 109315 118060 131178 177090 196767 212508 218630 262356 265635 327945 354180 393534 437260 531270 655890 787068 983835 1062540 1311780 1967670 3935340 129057289 258114578 387171867 516229156 645286445 774343734 1161515601 1290572890 1548687468 1935859335 2323031202 2581145780 3871718670 4646062404 5807578005 7743437340 11615156010 23230312020