728157372 has 12 divisors (see below), whose sum is σ = 1699033896. Its totient is φ = 242719120.

The previous prime is 728157359. The next prime is 728157377. The reversal of 728157372 is 273751827.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728157377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30339879 + ... + 30339902.

It is an arithmetic number, because the mean of its divisors is an integer number (141586158).

Almost surely, 2^728157372 is an apocalyptic number.

It is an amenable number.

728157372 is an abundant number, since it is smaller than the sum of its proper divisors (970876524).

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

728157372 is a wasteful number, since it uses less digits than its factorization.

728157372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60679788 (or 60679786 counting only the distinct ones).

The product of its digits is 164640, while the sum is 42.

The square root of 728157372 is about 26984.3912660634. The cubic root of 728157372 is about 899.6531058172.

The spelling of 728157372 in words is "seven hundred twenty-eight million, one hundred fifty-seven thousand, three hundred seventy-two".