47312818 has 8 divisors (see below), whose sum is σ = 81107712. Its totient is φ = 20276916.

The previous prime is 47312803. The next prime is 47312821. The reversal of 47312818 is 81821374.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×47312818² = 4477005494202248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689730 + ... + 1689757.

It is an arithmetic number, because the mean of its divisors is an integer number (10138464).

Almost surely, 2^47312818 is an apocalyptic number.

47312818 is a deficient number, since it is larger than the sum of its proper divisors (33794894).

47312818 is a wasteful number, since it uses less digits than its factorization.

47312818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379496.

The product of its digits is 10752, while the sum is 34.

The square root of 47312818 is about 6878.4313618731. The cubic root of 47312818 is about 361.6814806545.

The spelling of 47312818 in words is "forty-seven million, three hundred twelve thousand, eight hundred eighteen".