47052978 has 64 divisors (see below), whose sum is σ = 112803840. Its totient is φ = 12801600.

The previous prime is 47052931. The next prime is 47052979. The reversal of 47052978 is 87925074.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (47052979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92188 + ... + 92696.

It is an arithmetic number, because the mean of its divisors is an integer number (1762560).

Almost surely, 2^47052978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47052978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56401920).

47052978 is an abundant number, since it is smaller than the sum of its proper divisors (65750862).

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

47052978 is a wasteful number, since it uses less digits than its factorization.

47052978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 47052978 is about 6859.5173299584. The cubic root of 47052978 is about 361.0181517002.

The spelling of 47052978 in words is "forty-seven million, fifty-two thousand, nine hundred seventy-eight".