28029080 has 64 divisors (see below), whose sum is σ = 66333600. Its totient is φ = 10644480.

The previous prime is 28029049. The next prime is 28029097. The reversal of 28029080 is 8092082.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 84515 + ... + 84845.

Almost surely, 2^28029080 is an apocalyptic number.

28029080 is a gapful number since it is divisible by the number (20) 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 28029080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33166800).

28029080 is an abundant number, since it is smaller than the sum of its proper divisors (38304520).

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

28029080 is a wasteful number, since it uses less digits than its factorization.

28029080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 28029080 is about 5294.2497107711. The cubic root of 28029080 is about 303.7639846339.

The spelling of 28029080 in words is "twenty-eight million, twenty-nine thousand, eighty".