61928388 has 30 divisors (see below), whose sum is σ = 161893886. Its totient is φ = 20642688.

The previous prime is 61928387. The next prime is 61928393. The reversal of 61928388 is 88382916.

61928388 is a `hidden beast` number, since 619 + 28 + 3 + 8 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47775744 + 14152644 = 6912^2 + 3762^2 .

It is not an unprimeable number, because it can be changed into a prime (61928387) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 95245 + ... + 95892.

Almost surely, 2^61928388 is an apocalyptic number.

It is an amenable number.

61928388 is an abundant number, since it is smaller than the sum of its proper divisors (99965498).

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

61928388 is a wasteful number, since it uses less digits than its factorization.

61928388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191153 (or 191142 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 61928388 is about 7869.4591936168. The cubic root of 61928388 is about 395.6367191785.

The spelling of 61928388 in words is "sixty-one million, nine hundred twenty-eight thousand, three hundred eighty-eight".