47180866 has 16 divisors (see below), whose sum is σ = 74213568. Its totient is φ = 22453200.

The previous prime is 47180863. The next prime is 47180867. The reversal of 47180866 is 66808174.

It is not an unprimeable number, because it can be changed into a prime (47180863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7276 + ... + 12136.

It is an arithmetic number, because the mean of its divisors is an integer number (4638348).

Almost surely, 2^47180866 is an apocalyptic number.

47180866 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

47180866 is a deficient number, since it is larger than the sum of its proper divisors (27032702).

47180866 is a wasteful number, since it uses less digits than its factorization.

47180866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 47180866 is about 6868.8329430843. The cubic root of 47180866 is about 361.3449331646.

The spelling of 47180866 in words is "forty-seven million, one hundred eighty thousand, eight hundred sixty-six".