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23285860 = 2251389561
BaseRepresentation
bin101100011010…
…1000001100100
31121211001012021
41120311001210
521430121420
62151032524
7401632543
oct130650144
947731167
1023285860
1112165014
12796b744
134a93c20
14314215a
15209e7aa
hex1635064

23285860 has 24 divisors (see below), whose sum is σ = 52662456. Its totient is φ = 8597760.

The previous prime is 23285851. The next prime is 23285879. The reversal of 23285860 is 6858232.

It can be written as a sum of positive squares in 4 ways, for example, as 14884 + 23270976 = 122^2 + 4824^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44521 + ... + 45040.

It is an arithmetic number, because the mean of its divisors is an integer number (2194269).

Almost surely, 223285860 is an apocalyptic number.

23285860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23285860 is an abundant number, since it is smaller than the sum of its proper divisors (29376596).

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

23285860 is a wasteful number, since it uses less digits than its factorization.

23285860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89583 (or 89581 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 23285860 is about 4825.5424565535. The cubic root of 23285860 is about 285.5600355486.

The spelling of 23285860 in words is "twenty-three million, two hundred eighty-five thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 89561 179122 358244 447805 895610 1164293 1791220 2328586 4657172 5821465 11642930 23285860