28872151 has 16 divisors (see below), whose sum is σ = 36161280. Its totient is φ = 22394880.

The previous prime is 28872127. The next prime is 28872161. The reversal of 28872151 is 15127882.

It is a 11-Lehmer number, since φ(28872151) divides (28872151-1)¹¹.

It is a cyclic number.

It is not a de Polignac number, because 28872151 - 2¹¹ = 28870103 is a prime.

It is a super-2 number, since 2×28872151² = 1667202206733602, 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 (28872101) 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, 19060 + ... + 20518.

It is an arithmetic number, because the mean of its divisors is an integer number (2260080).

Almost surely, 2^28872151 is an apocalyptic number.

28872151 is a deficient number, since it is larger than the sum of its proper divisors (7289129).

28872151 is a wasteful number, since it uses less digits than its factorization.

28872151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734.

The product of its digits is 8960, while the sum is 34.

The square root of 28872151 is about 5373.2812135603. The cubic root of 28872151 is about 306.7795316814.

The spelling of 28872151 in words is "twenty-eight million, eight hundred seventy-two thousand, one hundred fifty-one".