61017928 has 8 divisors (see below), whose sum is σ = 114408630. Its totient is φ = 30508960.

The previous prime is 61017899. The next prime is 61017937. The reversal of 61017928 is 82971016.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 53846244 + 7171684 = 7338^2 + 2678^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 61017893 and 61017902.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3813613 + ... + 3813628.

Almost surely, 2^61017928 is an apocalyptic number.

It is an amenable number.

61017928 is a deficient number, since it is larger than the sum of its proper divisors (53390702).

61017928 is a wasteful number, since it uses less digits than its factorization.

61017928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7627247 (or 7627243 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 61017928 is about 7811.3973141814. The cubic root of 61017928 is about 393.6882792986.

The spelling of 61017928 in words is "sixty-one million, seventeen thousand, nine hundred twenty-eight".