47915816 has 32 divisors (see below), whose sum is σ = 98589960. Its totient is φ = 21695232.

The previous prime is 47915797. The next prime is 47915837. The reversal of 47915816 is 61851974.

It can be written as a sum of positive squares in 4 ways, for example, as 25542916 + 22372900 = 5054^2 + 4730^2 .

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, 1166 + ... + 9858.

Almost surely, 2^47915816 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 47915816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49294980).

47915816 is an abundant number, since it is smaller than the sum of its proper divisors (50674144).

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

47915816 is a wasteful number, since it uses less digits than its factorization.

47915816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8765 (or 8761 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 47915816 is about 6922.1251072196. The cubic root of 47915816 is about 363.2115324600.

The spelling of 47915816 in words is "forty-seven million, nine hundred fifteen thousand, eight hundred sixteen".