61874728 has 8 divisors (see below), whose sum is σ = 116015130. Its totient is φ = 30937360.

The previous prime is 61874723. The next prime is 61874737. The reversal of 61874728 is 82747816.

It can be written as a sum of positive squares in only one way, i.e., 44916804 + 16957924 = 6702^2 + 4118^2 .

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

It is not an unprimeable number, because it can be changed into a prime (61874723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3867163 + ... + 3867178.

Almost surely, 2^61874728 is an apocalyptic number.

It is an amenable number.

61874728 is a deficient number, since it is larger than the sum of its proper divisors (54140402).

61874728 is a wasteful number, since it uses less digits than its factorization.

61874728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7734347 (or 7734343 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 61874728 is about 7866.0490718022. The cubic root of 61874728 is about 395.5224151047.

The spelling of 61874728 in words is "sixty-one million, eight hundred seventy-four thousand, seven hundred twenty-eight".