285488428 has 6 divisors (see below), whose sum is σ = 499604756. Its totient is φ = 142744212.

The previous prime is 285488417. The next prime is 285488449. The reversal of 285488428 is 824884582.

It is a super-2 number, since 2×285488428² = 163007285043822368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35686050 + ... + 35686057.

Almost surely, 2^285488428 is an apocalyptic number.

It is an amenable number.

285488428 is a deficient number, since it is larger than the sum of its proper divisors (214116328).

285488428 is a wasteful number, since it uses less digits than its factorization.

285488428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71372111 (or 71372109 counting only the distinct ones).

The product of its digits is 1310720, while the sum is 49.

The square root of 285488428 is about 16896.4028124332. The cubic root of 285488428 is about 658.4601598238.

The spelling of 285488428 in words is "two hundred eighty-five million, four hundred eighty-eight thousand, four hundred twenty-eight".