Search a number
-
+
23285480 = 235582137
BaseRepresentation
bin101100011010…
…0111011101000
31121211000200012
41120310323220
521430113410
62151031052
7401631461
oct130647350
947730605
1023285480
11121647a9
12796b488
134a939ba
143141d68
15209e605
hex1634ee8

23285480 has 16 divisors (see below), whose sum is σ = 52392420. Its totient is φ = 9314176.

The previous prime is 23285477. The next prime is 23285491. The reversal of 23285480 is 8458232.

It can be written as a sum of positive squares in 2 ways, for example, as 20124196 + 3161284 = 4486^2 + 1778^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 291029 + ... + 291108.

Almost surely, 223285480 is an apocalyptic number.

23285480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23285480 is an abundant number, since it is smaller than the sum of its proper divisors (29106940).

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

23285480 is a wasteful number, since it uses less digits than its factorization.

23285480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582148 (or 582144 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 23285480 is about 4825.5030825811. The cubic root of 23285480 is about 285.5584821967.

The spelling of 23285480 in words is "twenty-three million, two hundred eighty-five thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 582137 1164274 2328548 2910685 4657096 5821370 11642740 23285480