47451636 has 24 divisors (see below), whose sum is σ = 123023040. Its totient is φ = 15817176.

The previous prime is 47451631. The next prime is 47451653. The reversal of 47451636 is 63615474.

It is a happy number.

47451636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 47451636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47451631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 219576 + ... + 219791.

It is an arithmetic number, because the mean of its divisors is an integer number (5125960).

Almost surely, 2^47451636 is an apocalyptic number.

It is an amenable number.

47451636 is an abundant number, since it is smaller than the sum of its proper divisors (75571404).

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

47451636 is a wasteful number, since it uses less digits than its factorization.

47451636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439380 (or 439372 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 47451636 is about 6888.5147891254. The cubic root of 47451636 is about 362.0348653374.

It can be divided in two parts, 474516 and 36, that added together give a cube (474552 = 78³).

The spelling of 47451636 in words is "forty-seven million, four hundred fifty-one thousand, six hundred thirty-six".