47643780 has 24 divisors (see below), whose sum is σ = 133402752. Its totient is φ = 12704992.

The previous prime is 47643751. The next prime is 47643797. The reversal of 47643780 is 8734674.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 396972 + ... + 397091.

It is an arithmetic number, because the mean of its divisors is an integer number (5558448).

Almost surely, 2^47643780 is an apocalyptic number.

It is an amenable number.

47643780 is an abundant number, since it is smaller than the sum of its proper divisors (85758972).

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

47643780 is a wasteful number, since it uses less digits than its factorization.

47643780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794075 (or 794073 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 47643780 is about 6902.4473920487. The cubic root of 47643780 is about 362.5228649866.

The spelling of 47643780 in words is "forty-seven million, six hundred forty-three thousand, seven hundred eighty".