47161472 has 24 divisors (see below), whose sum is σ = 94109535. Its totient is φ = 23541888.

The previous prime is 47161469. The next prime is 47161481. The reversal of 47161472 is 27416174.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 23580736 + 23580736 = 4856^2 + 4856^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4856.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 77393 + ... + 77999.

Almost surely, 2^47161472 is an apocalyptic number.

It is an amenable number.

47161472 is a deficient number, since it is larger than the sum of its proper divisors (46948063).

47161472 is an frugal number, since it uses more digits than its factorization.

47161472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 609 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 47161472 is about 6867.4210588837. The cubic root of 47161472 is about 361.2954153221.

Multiplying 47161472 by its sum of digits (32), we get a square (1509167104 = 38848²).

47161472 divided by its sum of digits (32) gives a square (1473796 = 1214²).

The spelling of 47161472 in words is "forty-seven million, one hundred sixty-one thousand, four hundred seventy-two".