728157144 has 64 divisors (see below), whose sum is σ = 2138653440. Its totient is φ = 203679360.

The previous prime is 728157127. The next prime is 728157163. The reversal of 728157144 is 441751827.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 102652 + ... + 109515.

It is an arithmetic number, because the mean of its divisors is an integer number (33416460).

Almost surely, 2^728157144 is an apocalyptic number.

It is an amenable number.

728157144 is an abundant number, since it is smaller than the sum of its proper divisors (1410496296).

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

728157144 is a wasteful number, since it uses less digits than its factorization.

728157144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212200 (or 212196 counting only the distinct ones).

The product of its digits is 62720, while the sum is 39.

The square root of 728157144 is about 26984.3870413986. The cubic root of 728157144 is about 899.6530119176.

The spelling of 728157144 in words is "seven hundred twenty-eight million, one hundred fifty-seven thousand, one hundred forty-four".