47649620 has 12 divisors (see below), whose sum is σ = 100064244. Its totient is φ = 19059840.

The previous prime is 47649619. The next prime is 47649643. The reversal of 47649620 is 2694674.

47649620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27164944 + 20484676 = 5212^2 + 4526^2 .

It is a super-2 number, since 2×47649620² = 4540972572288800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191221 + ... + 1191260.

It is an arithmetic number, because the mean of its divisors is an integer number (8338687).

Almost surely, 2^47649620 is an apocalyptic number.

It is an amenable number.

47649620 is an abundant number, since it is smaller than the sum of its proper divisors (52414624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47649620 is a wasteful number, since it uses less digits than its factorization.

47649620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382490 (or 2382488 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 47649620 is about 6902.8704174423. The cubic root of 47649620 is about 362.5376766230.

The spelling of 47649620 in words is "forty-seven million, six hundred forty-nine thousand, six hundred twenty".