47823642 has 16 divisors (see below), whose sum is σ = 106274880. Its totient is φ = 15941196.

The previous prime is 47823631. The next prime is 47823667. The reversal of 47823642 is 24632874.

47823642 is a `hidden beast` number, since 4 + 7 + 8 + 2 + 3 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 47823597 and 47823606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442758 + ... + 442865.

It is an arithmetic number, because the mean of its divisors is an integer number (6642180).

Almost surely, 2^47823642 is an apocalyptic number.

47823642 is an abundant number, since it is smaller than the sum of its proper divisors (58451238).

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

47823642 is a wasteful number, since it uses less digits than its factorization.

47823642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885634 (or 885628 counting only the distinct ones).

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

The square root of 47823642 is about 6915.4639757575. The cubic root of 47823642 is about 362.9784838008.

The spelling of 47823642 in words is "forty-seven million, eight hundred twenty-three thousand, six hundred forty-two".