61272728 has 16 divisors (see below), whose sum is σ = 125330760. Its totient is φ = 27851200.

The previous prime is 61272719. The next prime is 61272733. The reversal of 61272728 is 82727216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348053 + ... + 348228.

Almost surely, 2^61272728 is an apocalyptic number.

It is an amenable number.

61272728 is an abundant number, since it is smaller than the sum of its proper divisors (64058032).

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

61272728 is a wasteful number, since it uses less digits than its factorization.

61272728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696298 (or 696294 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 61272728 is about 7827.6898252294. The cubic root of 61272728 is about 394.2355090054.

The spelling of 61272728 in words is "sixty-one million, two hundred seventy-two thousand, seven hundred twenty-eight".