55928704 has 128 divisors (see below), whose sum is σ = 132804000. Its totient is φ = 23224320.

The previous prime is 55928701. The next prime is 55928707. The reversal of 55928704 is 40782955.

It is an interprime number because it is at equal distance from previous prime (55928701) and next prime (55928707).

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×55928704² = 6256039862239232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55928701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 916834 + ... + 916894.

Almost surely, 2^55928704 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 55928704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66402000).

55928704 is an abundant number, since it is smaller than the sum of its proper divisors (76875296).

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

55928704 is a wasteful number, since it uses less digits than its factorization.

55928704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 55928704 is about 7478.5495919998. The cubic root of 55928704 is about 382.4238052908.

The spelling of 55928704 in words is "fifty-five million, nine hundred twenty-eight thousand, seven hundred four".