28731154 has 16 divisors (see below), whose sum is σ = 45773280. Its totient is φ = 13487040.

The previous prime is 28731137. The next prime is 28731179. The reversal of 28731154 is 45113782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949 + ... + 7639.

It is an arithmetic number, because the mean of its divisors is an integer number (2860830).

Almost surely, 2^28731154 is an apocalyptic number.

28731154 is a deficient number, since it is larger than the sum of its proper divisors (17042126).

28731154 is a wasteful number, since it uses less digits than its factorization.

28731154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825.

The product of its digits is 6720, while the sum is 31.

The square root of 28731154 is about 5360.1449607263. The cubic root of 28731154 is about 306.2793311349.

The spelling of 28731154 in words is "twenty-eight million, seven hundred thirty-one thousand, one hundred fifty-four".