20448190 has 48 divisors (see below), whose sum is σ = 44323200. Its totient is φ = 6764352.

The previous prime is 20448179. The next prime is 20448191. The reversal of 20448190 is 9184402.

It is a super-2 number, since 2×20448190² = 836256948552200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20448191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13491 + ... + 14929.

It is an arithmetic number, because the mean of its divisors is an integer number (923400).

Almost surely, 2^20448190 is an apocalyptic number.

20448190 is an abundant number, since it is smaller than the sum of its proper divisors (23875010).

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

20448190 is a wasteful number, since it uses less digits than its factorization.

20448190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 20448190 is about 4521.9674921432. The cubic root of 20448190 is about 273.4544261522.

The spelling of 20448190 in words is "twenty million, four hundred forty-eight thousand, one hundred ninety".