285978952 has 32 divisors (see below), whose sum is σ = 616043520. Its totient is φ = 121916160.

The previous prime is 285978949. The next prime is 285978961. The reversal of 285978952 is 259879582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 285978893 and 285978902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2673 + ... + 24064.

It is an arithmetic number, because the mean of its divisors is an integer number (19251360).

Almost surely, 2^285978952 is an apocalyptic number.

It is an amenable number.

285978952 is an abundant number, since it is smaller than the sum of its proper divisors (330064568).

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

285978952 is a wasteful number, since it uses less digits than its factorization.

285978952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26941 (or 26937 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 55.

The square root of 285978952 is about 16910.9122166724. The cubic root of 285978952 is about 658.8370644191.

The spelling of 285978952 in words is "two hundred eighty-five million, nine hundred seventy-eight thousand, nine hundred fifty-two".