28482420 has 24 divisors (see below), whose sum is σ = 79750944. Its totient is φ = 7595296.

The previous prime is 28482409. The next prime is 28482439. The reversal of 28482420 is 2428482.

It is a super-2 number, since 2×28482420² = 1622496498112800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 237294 + ... + 237413.

It is an arithmetic number, because the mean of its divisors is an integer number (3322956).

Almost surely, 2^28482420 is an apocalyptic number.

28482420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28482420 is an abundant number, since it is smaller than the sum of its proper divisors (51268524).

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

28482420 is a wasteful number, since it uses less digits than its factorization.

28482420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474719 (or 474717 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 28482420 is about 5336.8923541702. The cubic root of 28482420 is about 305.3929183096.

The spelling of 28482420 in words is "twenty-eight million, four hundred eighty-two thousand, four hundred twenty".