28373808 has 80 divisors (see below), whose sum is σ = 76602240. Its totient is φ = 9042432.

The previous prime is 28373797. The next prime is 28373809. The reversal of 28373808 is 80837382.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28373809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121660 + ... + 121892.

It is an arithmetic number, because the mean of its divisors is an integer number (957528).

Almost surely, 2^28373808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28373808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38301120).

28373808 is an abundant number, since it is smaller than the sum of its proper divisors (48228432).

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

28373808 is a wasteful number, since it uses less digits than its factorization.

28373808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 28373808 is about 5326.7070503267. The cubic root of 28373808 is about 305.0042389449.

The spelling of 28373808 in words is "twenty-eight million, three hundred seventy-three thousand, eight hundred eight".