728658232974 has 160 divisors (see below), whose sum is σ = 1979035762176. Its totient is φ = 195871452480.

The previous prime is 728658232963. The next prime is 728658233041. The reversal of 728658232974 is 479232856827.

728658232974 is a `hidden beast` number, since 7 + 28 + 6 + 582 + 3 + 29 + 7 + 4 = 666.

728658232974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1362009 + ... + 1819995.

Almost surely, 2^728658232974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728658232974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989517881088).

728658232974 is an abundant number, since it is smaller than the sum of its proper divisors (1250377529202).

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

728658232974 is a wasteful number, since it uses less digits than its factorization.

728658232974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458092 (or 458083 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 728658232974 in words is "seven hundred twenty-eight billion, six hundred fifty-eight million, two hundred thirty-two thousand, nine hundred seventy-four".