28484238 has 16 divisors (see below), whose sum is σ = 57522816. Its totient is φ = 9402360.

The previous prime is 28484227. The next prime is 28484243. The reversal of 28484238 is 83248482.

It is a super-2 number, since 2×28484238² = 1622703628881288, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28484196 and 28484205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22428 + ... + 23663.

It is an arithmetic number, because the mean of its divisors is an integer number (3595176).

Almost surely, 2^28484238 is an apocalyptic number.

28484238 is an abundant number, since it is smaller than the sum of its proper divisors (29038578).

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

28484238 is a wasteful number, since it uses less digits than its factorization.

28484238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46199.

The product of its digits is 98304, while the sum is 39.

The square root of 28484238 is about 5337.0626752925. The cubic root of 28484238 is about 305.3994157972.

The spelling of 28484238 in words is "twenty-eight million, four hundred eighty-four thousand, two hundred thirty-eight".