47813644 has 24 divisors (see below), whose sum is σ = 85800960. Its totient is φ = 23307024.

The previous prime is 47813621. The next prime is 47813651. The reversal of 47813644 is 44631874.

It is a super-2 number, since 2×47813644² = 4572289105117472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25317 + ... + 27139.

It is an arithmetic number, because the mean of its divisors is an integer number (3575040).

Almost surely, 2^47813644 is an apocalyptic number.

It is an amenable number.

47813644 is a deficient number, since it is larger than the sum of its proper divisors (37987316).

47813644 is a wasteful number, since it uses less digits than its factorization.

47813644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989 (or 1987 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 47813644 is about 6914.7410652894. The cubic root of 47813644 is about 362.9531873041.

The spelling of 47813644 in words is "forty-seven million, eight hundred thirteen thousand, six hundred forty-four".