28363020 has 48 divisors (see below), whose sum is σ = 90763008. Its totient is φ = 6482880.

The previous prime is 28363019. The next prime is 28363031. The reversal of 28363020 is 2036382.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33346 + ... + 34185.

It is an arithmetic number, because the mean of its divisors is an integer number (1890896).

Almost surely, 2^28363020 is an apocalyptic number.

28363020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28363020 is an abundant number, since it is smaller than the sum of its proper divisors (62399988).

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

28363020 is a wasteful number, since it uses less digits than its factorization.

28363020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67550 (or 67548 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 28363020 is about 5325.6943209313. The cubic root of 28363020 is about 304.9655788442.

The spelling of 28363020 in words is "twenty-eight million, three hundred sixty-three thousand, twenty".