28155024 has 60 divisors (see below), whose sum is σ = 80645136. Its totient is φ = 9164736.

The previous prime is 28154999. The next prime is 28155073. The reversal of 28155024 is 42055182.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3919 + ... + 8465.

Almost surely, 2^28155024 is an apocalyptic number.

28155024 is a gapful number since it is divisible by the number (24) 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 28155024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40322568).

28155024 is an abundant number, since it is smaller than the sum of its proper divisors (52490112).

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

28155024 is a wasteful number, since it uses less digits than its factorization.

28155024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604 (or 4595 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 28155024 is about 5306.1307937140. The cubic root of 28155024 is about 304.2182758323.

The spelling of 28155024 in words is "twenty-eight million, one hundred fifty-five thousand, twenty-four".