28892004 has 24 divisors (see below), whose sum is σ = 69740160. Its totient is φ = 9298464.

The previous prime is 28891999. The next prime is 28892009. The reversal of 28892004 is 40029882.

It is an interprime number because it is at equal distance from previous prime (28891999) and next prime (28892009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28892009) 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, 41164 + ... + 41859.

It is an arithmetic number, because the mean of its divisors is an integer number (2905840).

Almost surely, 2^28892004 is an apocalyptic number.

It is an amenable number.

28892004 is an abundant number, since it is smaller than the sum of its proper divisors (40848156).

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

28892004 is a wasteful number, since it uses less digits than its factorization.

28892004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83059 (or 83057 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 28892004 is about 5375.1282775391. The cubic root of 28892004 is about 306.8498312422.

The spelling of 28892004 in words is "twenty-eight million, eight hundred ninety-two thousand, four".