285708960 has 72 divisors (see below), whose sum is σ = 974986740. Its totient is φ = 76188672.

The previous prime is 285708959. The next prime is 285709001. The reversal of 285708960 is 69807582.

It can be written as a sum of positive squares in 2 ways, for example, as 266734224 + 18974736 = 16332^2 + 4356^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97765 + ... + 100644.

Almost surely, 2^285708960 is an apocalyptic number.

285708960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285708960 is an abundant number, since it is smaller than the sum of its proper divisors (689277780).

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

285708960 is a wasteful number, since it uses less digits than its factorization.

285708960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198430 (or 198419 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 285708960 is about 16902.9275570831. The cubic root of 285708960 is about 658.6296636719.

The spelling of 285708960 in words is "two hundred eighty-five million, seven hundred eight thousand, nine hundred sixty".