61928780 has 12 divisors (see below), whose sum is σ = 130050480. Its totient is φ = 24771504.

The previous prime is 61928767. The next prime is 61928821. The reversal of 61928780 is 8782916.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 1548200 + ... + 1548239.

It is an arithmetic number, because the mean of its divisors is an integer number (10837540).

Almost surely, 2^61928780 is an apocalyptic number.

It is an amenable number.

61928780 is an abundant number, since it is smaller than the sum of its proper divisors (68121700).

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

61928780 is a wasteful number, since it uses less digits than its factorization.

61928780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096448 (or 3096446 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 61928780 is about 7869.4840999903. The cubic root of 61928780 is about 395.6375539559.

The spelling of 61928780 in words is "sixty-one million, nine hundred twenty-eight thousand, seven hundred eighty".