54128772 has 36 divisors (see below), whose sum is σ = 139741056. Its totient is φ = 17658480.

The previous prime is 54128771. The next prime is 54128779. The reversal of 54128772 is 27782145.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (54128771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14304 + ... + 17687.

It is an arithmetic number, because the mean of its divisors is an integer number (3881696).

Almost surely, 2^54128772 is an apocalyptic number.

It is an amenable number.

54128772 is an abundant number, since it is smaller than the sum of its proper divisors (85612284).

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

54128772 is a wasteful number, since it uses less digits than its factorization.

54128772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32048 (or 32043 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 54128772 is about 7357.2258358705. The cubic root of 54128772 is about 378.2765256337.

The spelling of 54128772 in words is "fifty-four million, one hundred twenty-eight thousand, seven hundred seventy-two".