728272824 has 32 divisors (see below), whose sum is σ = 1883466000. Its totient is φ = 234386432.

The previous prime is 728272823. The next prime is 728272829. The reversal of 728272824 is 428272827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728272823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522489 + ... + 523880.

Almost surely, 2^728272824 is an apocalyptic number.

It is an amenable number.

728272824 is an abundant number, since it is smaller than the sum of its proper divisors (1155193176).

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

728272824 is a wasteful number, since it uses less digits than its factorization.

728272824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046407 (or 1046403 counting only the distinct ones).

The product of its digits is 200704, while the sum is 42.

The square root of 728272824 is about 26986.5304179696. The cubic root of 728272824 is about 899.7006510619.

The spelling of 728272824 in words is "seven hundred twenty-eight million, two hundred seventy-two thousand, eight hundred twenty-four".