28345156 has 24 divisors (see below), whose sum is σ = 57226176. Its totient is φ = 12033120.

The previous prime is 28345099. The next prime is 28345157. The reversal of 28345156 is 65154382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28345157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1735 + ... + 7726.

It is an arithmetic number, because the mean of its divisors is an integer number (2384424).

Almost surely, 2^28345156 is an apocalyptic number.

It is an amenable number.

28345156 is an abundant number, since it is smaller than the sum of its proper divisors (28881020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28345156 is a wasteful number, since it uses less digits than its factorization.

28345156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9579 (or 9577 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 28345156 is about 5324.0169045562. The cubic root of 28345156 is about 304.9015394805.

The spelling of 28345156 in words is "twenty-eight million, three hundred forty-five thousand, one hundred fifty-six".