28894104 has 32 divisors (see below), whose sum is σ = 80262000. Its totient is φ = 9631296.

The previous prime is 28894091. The next prime is 28894133. The reversal of 28894104 is 40149882.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 66669 + ... + 67100.

Almost surely, 2^28894104 is an apocalyptic number.

28894104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28894104 is an abundant number, since it is smaller than the sum of its proper divisors (51367896).

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

28894104 is a wasteful number, since it uses less digits than its factorization.

28894104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133784 (or 133774 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 28894104 is about 5375.3236181648. The cubic root of 28894104 is about 306.8572654679.

The spelling of 28894104 in words is "twenty-eight million, eight hundred ninety-four thousand, one hundred four".