28075104 has 72 divisors (see below), whose sum is σ = 81022032. Its totient is φ = 9219840.

The previous prime is 28075097. The next prime is 28075129. The reversal of 28075104 is 40157082.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×28075104² = 1576422929221632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19762 + ... + 21134.

It is an arithmetic number, because the mean of its divisors is an integer number (1125306).

Almost surely, 2^28075104 is an apocalyptic number.

28075104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28075104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40511016).

28075104 is an abundant number, since it is smaller than the sum of its proper divisors (52946928).

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

28075104 is a wasteful number, since it uses less digits than its factorization.

28075104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 28075104 is about 5298.5945306279. The cubic root of 28075104 is about 303.9301547758.

The spelling of 28075104 in words is "twenty-eight million, seventy-five thousand, one hundred four".