47142808 has 32 divisors (see below), whose sum is σ = 90318960. Its totient is φ = 23063040.

The previous prime is 47142787. The next prime is 47142841. The reversal of 47142808 is 80824174.

It is a super-2 number, since 2×47142808² = 4444888692249728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150460 + ... + 150772.

Almost surely, 2^47142808 is an apocalyptic number.

It is an amenable number.

47142808 is a deficient number, since it is larger than the sum of its proper divisors (43176152).

47142808 is a wasteful number, since it uses less digits than its factorization.

47142808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 47142808 is about 6866.0620445784. The cubic root of 47142808 is about 361.2477485362.

The spelling of 47142808 in words is "forty-seven million, one hundred forty-two thousand, eight hundred eight".