28204134 has 32 divisors (see below), whose sum is σ = 65356800. Its totient is φ = 7947072.

The previous prime is 28204123. The next prime is 28204157. The reversal of 28204134 is 43140282.

It is a congruent number.

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, 1534 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (2042400).

Almost surely, 2^28204134 is an apocalyptic number.

28204134 is an abundant number, since it is smaller than the sum of its proper divisors (37152666).

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

28204134 is a wasteful number, since it uses less digits than its factorization.

28204134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9284.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28204134 is about 5310.7564432951. The cubic root of 28204134 is about 304.3950528245.

The spelling of 28204134 in words is "twenty-eight million, two hundred four thousand, one hundred thirty-four".