28426338 has 48 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 9159072.

The previous prime is 28426327. The next prime is 28426373. The reversal of 28426338 is 83362482.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79003 + ... + 79361.

It is an arithmetic number, because the mean of its divisors is an integer number (1326780).

Almost surely, 2^28426338 is an apocalyptic number.

28426338 is an abundant number, since it is smaller than the sum of its proper divisors (35259102).

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

28426338 is a wasteful number, since it uses less digits than its factorization.

28426338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 500 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28426338 is about 5331.6355839461. The cubic root of 28426338 is about 305.1923466467.

It can be divided in two parts, 2842 and 6338, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 28426338 in words is "twenty-eight million, four hundred twenty-six thousand, three hundred thirty-eight".