728625236 has 48 divisors (see below), whose sum is σ = 1379442960. Its totient is φ = 335493120.

The previous prime is 728625187. The next prime is 728625241. The reversal of 728625236 is 632526827.

It can be written as a sum of positive squares in 8 ways, for example, as 204490000 + 524135236 = 14300^2 + 22894^2 .

It is a junction number, because it is equal to n+sod(n) for n = 728625193 and 728625202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1115486 + ... + 1116138.

It is an arithmetic number, because the mean of its divisors is an integer number (28738395).

Almost surely, 2^728625236 is an apocalyptic number.

It is an amenable number.

728625236 is a deficient number, since it is larger than the sum of its proper divisors (650817724).

728625236 is a wasteful number, since it uses less digits than its factorization.

728625236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 1002 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 728625236 is about 26993.0590337590. The cubic root of 728625236 is about 899.8457496964.

The spelling of 728625236 in words is "seven hundred twenty-eight million, six hundred twenty-five thousand, two hundred thirty-six".