28494168 has 32 divisors (see below), whose sum is σ = 72446400. Its totient is φ = 9336608.

The previous prime is 28494161. The next prime is 28494187. The reversal of 28494168 is 86149482.

It is a super-2 number, since 2×28494168² = 1623835220024448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28494161) 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, 8646 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (2263950).

Almost surely, 2^28494168 is an apocalyptic number.

It is an amenable number.

28494168 is an abundant number, since it is smaller than the sum of its proper divisors (43952232).

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

28494168 is a wasteful number, since it uses less digits than its factorization.

28494168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20191 (or 20187 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 28494168 is about 5337.9928812242. The cubic root of 28494168 is about 305.4349004965.

The spelling of 28494168 in words is "twenty-eight million, four hundred ninety-four thousand, one hundred sixty-eight".