287020996 has 24 divisors (see below), whose sum is σ = 532772856. Its totient is φ = 134830080.

The previous prime is 287020991. The next prime is 287021003. The reversal of 287020996 is 699020782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37380996 + 249640000 = 6114^2 + 15800^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (287020991) 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, 38536 + ... + 45376.

It is an arithmetic number, because the mean of its divisors is an integer number (22198869).

Almost surely, 2^287020996 is an apocalyptic number.

It is an amenable number.

287020996 is a deficient number, since it is larger than the sum of its proper divisors (245751860).

287020996 is a wasteful number, since it uses less digits than its factorization.

287020996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7479 (or 7477 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 287020996 is about 16941.6940121111. The cubic root of 287020996 is about 659.6363132517.

The spelling of 287020996 in words is "two hundred eighty-seven million, twenty thousand, nine hundred ninety-six".