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23003000220 = 22351722551961
BaseRepresentation
bin10101011011000101…
…011110110110011100
32012101010012111010010
4111123011132312130
5334102232001340
614322322043220
71443015163404
oct253305366634
965333174103
1023003000220
119834659592
12455b7a9510
13222789c945
14118306d804
158e9703b80
hex55b15ed9c

23003000220 has 48 divisors (see below), whose sum is σ = 68197133088. Its totient is φ = 5773301760.

The previous prime is 23003000213. The next prime is 23003000231. The reversal of 23003000220 is 2200030032.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 23003000196 and 23003000205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11274961 + ... + 11277000.

It is an arithmetic number, because the mean of its divisors is an integer number (1420773606).

Almost surely, 223003000220 is an apocalyptic number.

23003000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23003000220 is an abundant number, since it is smaller than the sum of its proper divisors (45194132868).

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

23003000220 is a wasteful number, since it uses less digits than its factorization.

23003000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22551990 (or 22551988 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

Adding to 23003000220 its reverse (2200030032), we get a palindrome (25203030252).

The spelling of 23003000220 in words is "twenty-three billion, three million, two hundred twenty", and thus it is an aban number.

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 204 255 340 510 1020 22551961 45103922 67655883 90207844 112759805 135311766 225519610 270623532 338279415 383383337 451039220 676558830 766766674 1150150011 1353117660 1533533348 1916916685 2300300022 3833833370 4600600044 5750750055 7667666740 11501500110 23003000220