287213796 has 48 divisors (see below), whose sum is σ = 770313600. Its totient is φ = 92435616.

The previous prime is 287213789. The next prime is 287213807. The reversal of 287213796 is 697312782.

It is a super-2 number, since 2×287213796² = 164983529225459232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42720 + ... + 48983.

It is an arithmetic number, because the mean of its divisors is an integer number (16048200).

Almost surely, 2^287213796 is an apocalyptic number.

It is an amenable number.

287213796 is an abundant number, since it is smaller than the sum of its proper divisors (483099804).

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

287213796 is a wasteful number, since it uses less digits than its factorization.

287213796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91745 (or 91737 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 287213796 is about 16947.3831608305. The cubic root of 287213796 is about 659.7839788898.

The spelling of 287213796 in words is "two hundred eighty-seven million, two hundred thirteen thousand, seven hundred ninety-six".