285747264 has 140 divisors (see below), whose sum is σ = 924232848. Its totient is φ = 86572800.

The previous prime is 285747257. The next prime is 285747277. The reversal of 285747264 is 462747582.

It is a happy number.

285747264 is a `hidden beast` number, since 2 + 8 + 574 + 72 + 6 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54519 + ... + 59529.

Almost surely, 2^285747264 is an apocalyptic number.

285747264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285747264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462116424).

285747264 is an abundant number, since it is smaller than the sum of its proper divisors (638485584).

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

285747264 is a wasteful number, since it uses less digits than its factorization.

285747264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046 (or 5027 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 285747264 is about 16904.0605772696. The cubic root of 285747264 is about 658.6590957477.

The spelling of 285747264 in words is "two hundred eighty-five million, seven hundred forty-seven thousand, two hundred sixty-four".