28369908 has 72 divisors (see below), whose sum is σ = 82828928. Its totient is φ = 8019648.

The previous prime is 28369903. The next prime is 28369919. The reversal of 28369908 is 80996382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28369903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25410 + ... + 26502.

Almost surely, 2^28369908 is an apocalyptic number.

28369908 is a gapful number since it is divisible by the number (28) 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 28369908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41414464).

28369908 is an abundant number, since it is smaller than the sum of its proper divisors (54459020).

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

28369908 is a wasteful number, since it uses less digits than its factorization.

28369908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 28369908 is about 5326.3409579185. The cubic root of 28369908 is about 304.9902639551.

The spelling of 28369908 in words is "twenty-eight million, three hundred sixty-nine thousand, nine hundred eight".