28812159 has 32 divisors (see below), whose sum is σ = 44359680. Its totient is φ = 18468000.

The previous prime is 28812149. The next prime is 28812163. The reversal of 28812159 is 95121882.

It is not a de Polignac number, because 28812159 - 2¹⁵ = 28779391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28812149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150754 + ... + 150944.

It is an arithmetic number, because the mean of its divisors is an integer number (1386240).

Almost surely, 2^28812159 is an apocalyptic number.

28812159 is a deficient number, since it is larger than the sum of its proper divisors (15547521).

28812159 is a wasteful number, since it uses less digits than its factorization.

28812159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 382 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 28812159 is about 5367.6958743953. The cubic root of 28812159 is about 306.5669037234.

The spelling of 28812159 in words is "twenty-eight million, eight hundred twelve thousand, one hundred fifty-nine".