47280636 has 36 divisors (see below), whose sum is σ = 128709672. Its totient is φ = 14547744.

The previous prime is 47280577. The next prime is 47280647. The reversal of 47280636 is 63608274.

It is a tau number, because it is divible by the number of its divisors (36).

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 47280636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50046 + ... + 50981.

Almost surely, 2^47280636 is an apocalyptic number.

It is an amenable number.

47280636 is an abundant number, since it is smaller than the sum of its proper divisors (81429036).

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

47280636 is a wasteful number, since it uses less digits than its factorization.

47280636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101050 (or 101045 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 47280636 is about 6876.0916224262. The cubic root of 47280636 is about 361.5994572622.

The spelling of 47280636 in words is "forty-seven million, two hundred eighty thousand, six hundred thirty-six".