728219572 has 24 divisors (see below), whose sum is σ = 1281246120. Its totient is φ = 362156160.

The previous prime is 728219549. The next prime is 728219587. The reversal of 728219572 is 275912827.

It can be written as a sum of positive squares in 4 ways, for example, as 15649936 + 712569636 = 3956^2 + 26694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026754 + ... + 1027462.

It is an arithmetic number, because the mean of its divisors is an integer number (53385255).

Almost surely, 2^728219572 is an apocalyptic number.

It is an amenable number.

728219572 is a deficient number, since it is larger than the sum of its proper divisors (553026548).

728219572 is a wasteful number, since it uses less digits than its factorization.

728219572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731 (or 1729 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 728219572 is about 26985.5437595762. The cubic root of 728219572 is about 899.6787215389.

The spelling of 728219572 in words is "seven hundred twenty-eight million, two hundred nineteen thousand, five hundred seventy-two".