728787338 has 16 divisors (see below), whose sum is σ = 1141603200. Its totient is φ = 348277776.

The previous prime is 728787317. The next prime is 728787347. The reversal of 728787338 is 833787827.

It is a super-2 number, since 2×728787338² = 1062261968058252488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 728787338.

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, 61088 + ... + 72036.

It is an arithmetic number, because the mean of its divisors is an integer number (71350200).

Almost surely, 2^728787338 is an apocalyptic number.

728787338 is a deficient number, since it is larger than the sum of its proper divisors (412815862).

728787338 is a wasteful number, since it uses less digits than its factorization.

728787338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12421.

The product of its digits is 3161088, while the sum is 53.

The square root of 728787338 is about 26996.0615275636. The cubic root of 728787338 is about 899.9124762624.

The spelling of 728787338 in words is "seven hundred twenty-eight million, seven hundred eighty-seven thousand, three hundred thirty-eight".