53780928 has 56 divisors (see below), whose sum is σ = 150674832. Its totient is φ = 16871424.

The previous prime is 53780899. The next prime is 53780933. The reversal of 53780928 is 82908735.

It is a self number, because there is not a number n which added to its sum of digits gives 53780928.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4975 + ... + 11502.

It is an arithmetic number, because the mean of its divisors is an integer number (2690622).

Almost surely, 2^53780928 is an apocalyptic number.

It is an amenable number.

53780928 is an abundant number, since it is smaller than the sum of its proper divisors (96893904).

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

53780928 is a wasteful number, since it uses less digits than its factorization.

53780928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16509 (or 16499 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 53780928 is about 7333.5481180667. The cubic root of 53780928 is about 377.4644862283.

The spelling of 53780928 in words is "fifty-three million, seven hundred eighty thousand, nine hundred twenty-eight".