28980504 has 80 divisors (see below), whose sum is σ = 92782800. Its totient is φ = 8278848.

The previous prime is 28980463. The next prime is 28980517. The reversal of 28980504 is 40508982.

It is a super-2 number, since 2×28980504² = 1679739224188032, which contains 22 as substring.

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 polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1342 + ... + 7730.

It is an arithmetic number, because the mean of its divisors is an integer number (1159785).

Almost surely, 2^28980504 is an apocalyptic number.

28980504 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 28980504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46391400).

28980504 is an abundant number, since it is smaller than the sum of its proper divisors (63802296).

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

28980504 is a wasteful number, since it uses less digits than its factorization.

28980504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6414 (or 6401 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28980504 is about 5383.3543446442. The cubic root of 28980504 is about 307.1628189864.

The spelling of 28980504 in words is "twenty-eight million, nine hundred eighty thousand, five hundred four".