28372680 has 224 divisors, whose sum is σ = 110174400. Its totient is φ = 6438528.

The previous prime is 28372679. The next prime is 28372693. The reversal of 28372680 is 8627382.

It is a happy number.

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 55 ways as a sum of consecutive naturals, for example, 204051 + ... + 204189.

It is an arithmetic number, because the mean of its divisors is an integer number (491850).

Almost surely, 2^28372680 is an apocalyptic number.

28372680 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 28372680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55087200).

28372680 is an abundant number, since it is smaller than the sum of its proper divisors (81801720).

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

28372680 is a wasteful number, since it uses less digits than its factorization.

28372680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 28372680 is about 5326.6011677241. The cubic root of 28372680 is about 305.0001970795. Note that the first 3 decimals are identical.

The spelling of 28372680 in words is "twenty-eight million, three hundred seventy-two thousand, six hundred eighty".