61988928 has 28 divisors (see below), whose sum is σ = 164012880. Its totient is φ = 20662912.

The previous prime is 61988909. The next prime is 61988939. The reversal of 61988928 is 82988916.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161238 + ... + 161621.

Almost surely, 2^61988928 is an apocalyptic number.

It is an amenable number.

61988928 is an abundant number, since it is smaller than the sum of its proper divisors (102023952).

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

61988928 is a wasteful number, since it uses less digits than its factorization.

61988928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322874 (or 322864 counting only the distinct ones).

The product of its digits is 497664, while the sum is 51.

The square root of 61988928 is about 7873.3047699171. The cubic root of 61988928 is about 395.7655994709.

The spelling of 61988928 in words is "sixty-one million, nine hundred eighty-eight thousand, nine hundred twenty-eight".