47979620 has 48 divisors (see below), whose sum is σ = 109567920. Its totient is φ = 17542656.

The previous prime is 47979551. The next prime is 47979641. The reversal of 47979620 is 2697974.

It can be written as a sum of positive squares in 8 ways, for example, as 2390116 + 45589504 = 1546^2 + 6752^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27494 + ... + 29186.

It is an arithmetic number, because the mean of its divisors is an integer number (2282665).

Almost surely, 2^47979620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47979620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54783960).

47979620 is an abundant number, since it is smaller than the sum of its proper divisors (61588300).

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

47979620 is a wasteful number, since it uses less digits than its factorization.

47979620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 47979620 is about 6926.7322743123. The cubic root of 47979620 is about 363.3726766774.

The spelling of 47979620 in words is "forty-seven million, nine hundred seventy-nine thousand, six hundred twenty".