287697490 has 32 divisors (see below), whose sum is σ = 524978496. Its totient is φ = 113505600.

The previous prime is 287697479. The next prime is 287697491. The reversal of 287697490 is 94796782.

287697490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (287697491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447109 + ... + 447751.

It is an arithmetic number, because the mean of its divisors is an integer number (16405578).

Almost surely, 2^287697490 is an apocalyptic number.

287697490 is a deficient number, since it is larger than the sum of its proper divisors (237281006).

287697490 is a wasteful number, since it uses less digits than its factorization.

287697490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 287697490 is about 16961.6476204407. The cubic root of 287697490 is about 660.1541497913.

The spelling of 287697490 in words is "two hundred eighty-seven million, six hundred ninety-seven thousand, four hundred ninety".