47622636 has 18 divisors (see below), whose sum is σ = 120379532. Its totient is φ = 15874200.

The previous prime is 47622623. The next prime is 47622643. The reversal of 47622636 is 63622674.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1322851 = 47622636 / (4 + 7 + 6 + 2 + 2 + 6 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 47622636.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 661390 + ... + 661461.

Almost surely, 2^47622636 is an apocalyptic number.

It is an amenable number.

47622636 is an abundant number, since it is smaller than the sum of its proper divisors (72756896).

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

47622636 is a wasteful number, since it uses less digits than its factorization.

47622636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322861 (or 1322856 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 47622636 is about 6900.9155914270. The cubic root of 47622636 is about 362.4692286207.

The spelling of 47622636 in words is "forty-seven million, six hundred twenty-two thousand, six hundred thirty-six".