728554137 has 16 divisors (see below), whose sum is σ = 978624960. Its totient is φ = 482107392.

The previous prime is 728554129. The next prime is 728554139. The reversal of 728554137 is 731455827.

It is not a de Polignac number, because 728554137 - 2³ = 728554129 is a prime.

It is a super-2 number, since 2×728554137² = 1061582261079629538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728554139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239814 + ... + 242832.

It is an arithmetic number, because the mean of its divisors is an integer number (61164060).

Almost surely, 2^728554137 is an apocalyptic number.

It is an amenable number.

728554137 is a deficient number, since it is larger than the sum of its proper divisors (250070823).

728554137 is a wasteful number, since it uses less digits than its factorization.

728554137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592.

The product of its digits is 235200, while the sum is 42.

The square root of 728554137 is about 26991.7420149200. The cubic root of 728554137 is about 899.8164798647.

The spelling of 728554137 in words is "seven hundred twenty-eight million, five hundred fifty-four thousand, one hundred thirty-seven".