287878970 has 16 divisors (see below), whose sum is σ = 518805000. Its totient is φ = 115013184.

The previous prime is 287878957. The next prime is 287878973. The reversal of 287878970 is 79878782.

It can be written as a sum of positive squares in 4 ways, for example, as 226773481 + 61105489 = 15059^2 + 7817^2 .

It is not an unprimeable number, because it can be changed into a prime (287878973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8345 + ... + 25404.

Almost surely, 2^287878970 is an apocalyptic number.

287878970 is a deficient number, since it is larger than the sum of its proper divisors (230926030).

287878970 is a wasteful number, since it uses less digits than its factorization.

287878970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34609.

The product of its (nonzero) digits is 3161088, while the sum is 56.

The square root of 287878970 is about 16966.9964931923. The cubic root of 287878970 is about 660.2929293509.

The spelling of 287878970 in words is "two hundred eighty-seven million, eight hundred seventy-eight thousand, nine hundred seventy".