728223916 has 48 divisors (see below), whose sum is σ = 1471421952. Its totient is φ = 308908800.

The previous prime is 728223913. The next prime is 728223931. The reversal of 728223916 is 619322827.

It is not an unprimeable number, because it can be changed into a prime (728223913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2098455 + ... + 2098801.

It is an arithmetic number, because the mean of its divisors is an integer number (30654624).

Almost surely, 2^728223916 is an apocalyptic number.

It is an amenable number.

728223916 is an abundant number, since it is smaller than the sum of its proper divisors (743198036).

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

728223916 is a wasteful number, since it uses less digits than its factorization.

728223916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 908 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 728223916 is about 26985.6242469949. The cubic root of 728223916 is about 899.6805104667.

The spelling of 728223916 in words is "seven hundred twenty-eight million, two hundred twenty-three thousand, nine hundred sixteen".