287904964 has 6 divisors (see below), whose sum is σ = 503833694. Its totient is φ = 143952480.

The previous prime is 287904949. The next prime is 287904971. The reversal of 287904964 is 469409782.

It can be written as a sum of positive squares in only one way, i.e., 223263364 + 64641600 = 14942^2 + 8040^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35988117 + ... + 35988124.

Almost surely, 2^287904964 is an apocalyptic number.

It is an amenable number.

287904964 is a deficient number, since it is larger than the sum of its proper divisors (215928730).

287904964 is a wasteful number, since it uses less digits than its factorization.

287904964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71976245 (or 71976243 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 287904964 is about 16967.7624924443. The cubic root of 287904964 is about 660.3128024453.

The spelling of 287904964 in words is "two hundred eighty-seven million, nine hundred four thousand, nine hundred sixty-four".