61728204 has 24 divisors (see below), whose sum is σ = 144587520. Its totient is φ = 20496784.

The previous prime is 61728197. The next prime is 61728217. The reversal of 61728204 is 40282716.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6624 + ... + 12935.

It is an arithmetic number, because the mean of its divisors is an integer number (6024480).

Almost surely, 2^61728204 is an apocalyptic number.

It is an amenable number.

61728204 is an abundant number, since it is smaller than the sum of its proper divisors (82859316).

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

61728204 is a wasteful number, since it uses less digits than its factorization.

61728204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19829 (or 19827 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 61728204 is about 7856.7298540805. The cubic root of 61728204 is about 395.2099594134.

The spelling of 61728204 in words is "sixty-one million, seven hundred twenty-eight thousand, two hundred four".