728522877 has 4 divisors (see below), whose sum is σ = 971363840. Its totient is φ = 485681916.

The previous prime is 728522869. The next prime is 728522897. The reversal of 728522877 is 778225827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 728522877 - 2³ = 728522869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728522807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121420477 + ... + 121420482.

It is an arithmetic number, because the mean of its divisors is an integer number (242840960).

Almost surely, 2^728522877 is an apocalyptic number.

It is an amenable number.

728522877 is a deficient number, since it is larger than the sum of its proper divisors (242840963).

728522877 is a wasteful number, since it uses less digits than its factorization.

728522877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242840962.

The product of its digits is 878080, while the sum is 48.

The square root of 728522877 is about 26991.1629427115. The cubic root of 728522877 is about 899.8036102352.

The spelling of 728522877 in words is "seven hundred twenty-eight million, five hundred twenty-two thousand, eight hundred seventy-seven".