47709072 has 60 divisors (see below), whose sum is σ = 141380460. Its totient is φ = 14966784.

The previous prime is 47709041. The next prime is 47709097. The reversal of 47709072 is 27090774.

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 32216976 = 3936^2 + 5676^2 .

It is a super-2 number, since 2×47709072² = 4552311102202368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7297 + ... + 12192.

It is an arithmetic number, because the mean of its divisors is an integer number (2356341).

Almost surely, 2^47709072 is an apocalyptic number.

It is an amenable number.

47709072 is an abundant number, since it is smaller than the sum of its proper divisors (93671388).

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

47709072 is a wasteful number, since it uses less digits than its factorization.

47709072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19520 (or 19511 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 47709072 is about 6907.1753995392. The cubic root of 47709072 is about 362.6883922851.

The spelling of 47709072 in words is "forty-seven million, seven hundred nine thousand, seventy-two".