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22985380 = 22511104479
BaseRepresentation
bin101011110101…
…1101010100100
31121020210000101
41113223222210
521341013010
62140353444
7366241525
oct127535244
947223011
1022985380
1111a7a290
127845884
1349ba222
1430a484c
15204073a
hex15ebaa4

22985380 has 24 divisors (see below), whose sum is σ = 52657920. Its totient is φ = 8358240.

The previous prime is 22985363. The next prime is 22985381. The reversal of 22985380 is 8358922.

It is not an unprimeable number, because it can be changed into a prime (22985381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52020 + ... + 52459.

It is an arithmetic number, because the mean of its divisors is an integer number (2194080).

Almost surely, 222985380 is an apocalyptic number.

22985380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22985380 is an abundant number, since it is smaller than the sum of its proper divisors (29672540).

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

22985380 is a wasteful number, since it uses less digits than its factorization.

22985380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104499 (or 104497 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 22985380 is about 4794.3070406473. The cubic root of 22985380 is about 284.3264282055.

The spelling of 22985380 in words is "twenty-two million, nine hundred eighty-five thousand, three hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 104479 208958 417916 522395 1044790 1149269 2089580 2298538 4597076 5746345 11492690 22985380