802471857 has 16 divisors (see below), whose sum is σ = 1173761280. Its totient is φ = 483626000.

The previous prime is 802471841. The next prime is 802471861. The reversal of 802471857 is 758174208.

It is not a de Polignac number, because 802471857 - 2⁴ = 802471841 is a prime.

It is a super-2 number, since 2×802471857² = 1287922162554056898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (802471457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62019 + ... + 73832.

It is an arithmetic number, because the mean of its divisors is an integer number (73360080).

Almost surely, 2^802471857 is an apocalyptic number.

It is an amenable number.

802471857 is a deficient number, since it is larger than the sum of its proper divisors (371289423).

802471857 is a wasteful number, since it uses less digits than its factorization.

802471857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136044.

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 802471857 is about 28327.9342169527. The cubic root of 802471857 is about 929.2728956585.

The spelling of 802471857 in words is "eight hundred two million, four hundred seventy-one thousand, eight hundred fifty-seven".