287994699252 has 72 divisors (see below), whose sum is σ = 784059251976. Its totient is φ = 88605425664.

The previous prime is 287994699247. The next prime is 287994699263. The reversal of 287994699252 is 252996499782.

287994699252 is a `hidden beast` number, since 2 + 8 + 79 + 9 + 469 + 92 + 5 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 48016203876 + 239978495376 = 219126^2 + 489876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6556788 + ... + 6600564.

It is an arithmetic number, because the mean of its divisors is an integer number (10889711833).

Almost surely, 2^287994699252 is an apocalyptic number.

It is an amenable number.

287994699252 is an abundant number, since it is smaller than the sum of its proper divisors (496064552724).

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

287994699252 is a wasteful number, since it uses less digits than its factorization.

287994699252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57857 (or 57852 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 72.

The spelling of 287994699252 in words is "two hundred eighty-seven billion, nine hundred ninety-four million, six hundred ninety-nine thousand, two hundred fifty-two".