613872728 has 16 divisors (see below), whose sum is σ = 1315441680. Its totient is φ = 263088288.

The previous prime is 613872713. The next prime is 613872793. The reversal of 613872728 is 827278316.

It is a happy number.

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, 5480951 + ... + 5481062.

It is an arithmetic number, because the mean of its divisors is an integer number (82215105).

Almost surely, 2^613872728 is an apocalyptic number.

It is an amenable number.

613872728 is an abundant number, since it is smaller than the sum of its proper divisors (701568952).

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

613872728 is a wasteful number, since it uses less digits than its factorization.

613872728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10962026 (or 10962022 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 613872728 is about 24776.4551136760. The cubic root of 613872728 is about 849.8835955936.

The spelling of 613872728 in words is "six hundred thirteen million, eight hundred seventy-two thousand, seven hundred twenty-eight".