47857490 has 32 divisors (see below), whose sum is σ = 89385984. Its totient is φ = 18429120.

The previous prime is 47857477. The next prime is 47857493. The reversal of 47857490 is 9475874.

It is not an unprimeable number, because it can be changed into a prime (47857493) 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, 98027 + ... + 98513.

It is an arithmetic number, because the mean of its divisors is an integer number (2793312).

Almost surely, 2^47857490 is an apocalyptic number.

47857490 is a deficient number, since it is larger than the sum of its proper divisors (41528494).

47857490 is a wasteful number, since it uses less digits than its factorization.

47857490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 47857490 is about 6917.9108117986. The cubic root of 47857490 is about 363.0640983475.

The spelling of 47857490 in words is "forty-seven million, eight hundred fifty-seven thousand, four hundred ninety".