47531866 has 16 divisors (see below), whose sum is σ = 73801728. Its totient is φ = 22935600.

The previous prime is 47531857. The next prime is 47531879. The reversal of 47531866 is 66813574.

It is a happy 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, 27751 + ... + 29413.

It is an arithmetic number, because the mean of its divisors is an integer number (4612608).

Almost surely, 2^47531866 is an apocalyptic number.

47531866 is a deficient number, since it is larger than the sum of its proper divisors (26269862).

47531866 is a wasteful number, since it uses less digits than its factorization.

47531866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157.

The product of its digits is 120960, while the sum is 40.

The square root of 47531866 is about 6894.3357910679. The cubic root of 47531866 is about 362.2387901820.

The spelling of 47531866 in words is "forty-seven million, five hundred thirty-one thousand, eight hundred sixty-six".