61163928 has 48 divisors (see below), whose sum is σ = 189318480. Its totient is φ = 17475264.

The previous prime is 61163911. The next prime is 61163981. The reversal of 61163928 is 82936116.

61163928 is a `hidden beast` number, since 6 + 11 + 639 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 61163892 and 61163901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60175 + ... + 61182.

It is an arithmetic number, because the mean of its divisors is an integer number (3944135).

Almost surely, 2^61163928 is an apocalyptic number.

It is an amenable number.

61163928 is an abundant number, since it is smaller than the sum of its proper divisors (128154552).

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

61163928 is a wasteful number, since it uses less digits than its factorization.

61163928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121376 (or 121369 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 61163928 is about 7820.7370496648. The cubic root of 61163928 is about 394.0020270108.

The spelling of 61163928 in words is "sixty-one million, one hundred sixty-three thousand, nine hundred twenty-eight".