728887412 has 12 divisors (see below), whose sum is σ = 1391512416. Its totient is φ = 331312440.

The previous prime is 728887409. The next prime is 728887441. The reversal of 728887412 is 214788827.

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, 8282768 + ... + 8282855.

It is an arithmetic number, because the mean of its divisors is an integer number (115959368).

Almost surely, 2^728887412 is an apocalyptic number.

It is an amenable number.

728887412 is a deficient number, since it is larger than the sum of its proper divisors (662625004).

728887412 is a wasteful number, since it uses less digits than its factorization.

728887412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16565638 (or 16565636 counting only the distinct ones).

The product of its digits is 401408, while the sum is 47.

The square root of 728887412 is about 26997.9149565295. The cubic root of 728887412 is about 899.9536651043.

The spelling of 728887412 in words is "seven hundred twenty-eight million, eight hundred eighty-seven thousand, four hundred twelve".