28352155 has 16 divisors (see below), whose sum is σ = 37265760. Its totient is φ = 20579328.

The previous prime is 28352143. The next prime is 28352171. The reversal of 28352155 is 55125382.

It is a cyclic number.

It is not a de Polignac number, because 28352155 - 2⁹ = 28351643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (2329110).

Almost surely, 2^28352155 is an apocalyptic number.

28352155 is a deficient number, since it is larger than the sum of its proper divisors (8913605).

28352155 is a wasteful number, since it uses less digits than its factorization.

28352155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7470.

The product of its digits is 12000, while the sum is 31.

The square root of 28352155 is about 5324.6741684351. The cubic root of 28352155 is about 304.9266328951.

The spelling of 28352155 in words is "twenty-eight million, three hundred fifty-two thousand, one hundred fifty-five".