28149359 has 16 divisors (see below), whose sum is σ = 32947200. Its totient is φ = 23553504.

The previous prime is 28149347. The next prime is 28149371. The reversal of 28149359 is 95394182.

It is an interprime number because it is at equal distance from previous prime (28149347) and next prime (28149371).

It is a cyclic number.

It is not a de Polignac number, because 28149359 - 2⁸ = 28149103 is a prime.

It is a super-2 number, since 2×28149359² = 1584772824221762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28149259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60044 + ... + 60510.

It is an arithmetic number, because the mean of its divisors is an integer number (2059200).

Almost surely, 2^28149359 is an apocalyptic number.

28149359 is a deficient number, since it is larger than the sum of its proper divisors (4797841).

28149359 is a wasteful number, since it uses less digits than its factorization.

28149359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its digits is 77760, while the sum is 41.

The square root of 28149359 is about 5305.5969503912. The cubic root of 28149359 is about 304.1978708047.

The spelling of 28149359 in words is "twenty-eight million, one hundred forty-nine thousand, three hundred fifty-nine".