54643428 has 54 divisors (see below), whose sum is σ = 160682886. Its totient is φ = 15611904.

The previous prime is 54643417. The next prime is 54643429. The reversal of 54643428 is 82434645.

54643428 is a `hidden beast` number, since 5 + 4 + 643 + 4 + 2 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54641664 + 1764 = 7392^2 + 42^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 54643392 and 54643401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54643429) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13725 + ... + 17252.

It is an arithmetic number, because the mean of its divisors is an integer number (2975609).

Almost surely, 2^54643428 is an apocalyptic number.

It is an amenable number.

54643428 is an abundant number, since it is smaller than the sum of its proper divisors (106039458).

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

54643428 is a wasteful number, since it uses less digits than its factorization.

54643428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31001 (or 30989 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 54643428 is about 7392.1193172188. The cubic root of 54643428 is about 379.4716294726.

The spelling of 54643428 in words is "fifty-four million, six hundred forty-three thousand, four hundred twenty-eight".