724015228 has 12 divisors (see below), whose sum is σ = 1297930032. Its totient is φ = 353178080.

The previous prime is 724015219. The next prime is 724015291. The reversal of 724015228 is 822510427.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 724015228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2207200 + ... + 2207527.

It is an arithmetic number, because the mean of its divisors is an integer number (108160836).

Almost surely, 2^724015228 is an apocalyptic number.

It is an amenable number.

724015228 is a deficient number, since it is larger than the sum of its proper divisors (573914804).

724015228 is a wasteful number, since it uses less digits than its factorization.

724015228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414772 (or 4414770 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 724015228 is about 26907.5310647410. The cubic root of 724015228 is about 897.9439600745.

The spelling of 724015228 in words is "seven hundred twenty-four million, fifteen thousand, two hundred twenty-eight".