61523928 has 32 divisors (see below), whose sum is σ = 170900400. Its totient is φ = 20507904.

The previous prime is 61523923. The next prime is 61523939. The reversal of 61523928 is 82932516.

61523928 is a `hidden beast` number, since 615 + 2 + 39 + 2 + 8 = 666.

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 = 61523892 and 61523901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61523923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142201 + ... + 142632.

Almost surely, 2^61523928 is an apocalyptic number.

It is an amenable number.

61523928 is an abundant number, since it is smaller than the sum of its proper divisors (109376472).

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

61523928 is a wasteful number, since it uses less digits than its factorization.

61523928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284848 (or 284838 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 61523928 is about 7843.7190158751. The cubic root of 61523928 is about 394.7735239680.

The spelling of 61523928 in words is "sixty-one million, five hundred twenty-three thousand, nine hundred twenty-eight".