28504190 has 64 divisors (see below), whose sum is σ = 62318592. Its totient is φ = 9244800.

The previous prime is 28504183. The next prime is 28504193. The reversal of 28504190 is 9140582.

It is a super-2 number, since 2×28504190² = 1624977695112200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28504193) 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, 44009 + ... + 44651.

It is an arithmetic number, because the mean of its divisors is an integer number (973728).

Almost surely, 2^28504190 is an apocalyptic number.

28504190 is an abundant number, since it is smaller than the sum of its proper divisors (33814402).

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

28504190 is a wasteful number, since it uses less digits than its factorization.

28504190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 28504190 is about 5338.9315410483. The cubic root of 28504190 is about 305.4707055984.

The spelling of 28504190 in words is "twenty-eight million, five hundred four thousand, one hundred ninety".