47830644 has 36 divisors (see below), whose sum is σ = 124808320. Its totient is φ = 15428880.

The previous prime is 47830633. The next prime is 47830661. The reversal of 47830644 is 44603874.

47830644 is a `hidden beast` number, since 4 + 7 + 8 + 3 + 0 + 644 = 666.

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 junction number, because it is equal to n+sod(n) for n = 47830599 and 47830608.

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, 20314 + ... + 22545.

Almost surely, 2^47830644 is an apocalyptic number.

It is an amenable number.

47830644 is an abundant number, since it is smaller than the sum of its proper divisors (76977676).

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

47830644 is a wasteful number, since it uses less digits than its factorization.

47830644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42900 (or 42895 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 47830644 is about 6915.9702139324. The cubic root of 47830644 is about 362.9961978519.

The spelling of 47830644 in words is "forty-seven million, eight hundred thirty thousand, six hundred forty-four".