20038280 has 16 divisors (see below), whose sum is σ = 45086220. Its totient is φ = 8015296.

The previous prime is 20038279. The next prime is 20038283. The reversal of 20038280 is 8283002.

It can be written as a sum of positive squares in 2 ways, for example, as 19731364 + 306916 = 4442^2 + 554^2 .

It is not an unprimeable number, because it can be changed into a prime (20038283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250439 + ... + 250518.

Almost surely, 2^20038280 is an apocalyptic number.

20038280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20038280 is an abundant number, since it is smaller than the sum of its proper divisors (25047940).

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

20038280 is a wasteful number, since it uses less digits than its factorization.

20038280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500968 (or 500964 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20038280 is about 4476.4137431654. The cubic root of 20038280 is about 271.6148311320.

The spelling of 20038280 in words is "twenty million, thirty-eight thousand, two hundred eighty".