28165298 has 48 divisors (see below), whose sum is σ = 51830784. Its totient is φ = 11430720.

The previous prime is 28165279. The next prime is 28165307. The reversal of 28165298 is 89256182.

It is a super-2 number, since 2×28165298² = 1586568022857608, which contains 22 as substring.

Its product of digits (69120) is a multiple of the sum of its prime divisors (240).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221711 + ... + 221837.

It is an arithmetic number, because the mean of its divisors is an integer number (1079808).

Almost surely, 2^28165298 is an apocalyptic number.

28165298 is a deficient number, since it is larger than the sum of its proper divisors (23665486).

28165298 is a wasteful number, since it uses less digits than its factorization.

28165298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 240 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 28165298 is about 5307.0988308114. The cubic root of 28165298 is about 304.2552752499.

The spelling of 28165298 in words is "twenty-eight million, one hundred sixty-five thousand, two hundred ninety-eight".