20057190 has 32 divisors (see below), whose sum is σ = 48612096. Its totient is φ = 5295840.

The previous prime is 20057189. The next prime is 20057197. The reversal of 20057190 is 9175002.

It is a super-2 number, since 2×20057190² = 804581741392200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20057190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20057197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156 + ... + 6335.

It is an arithmetic number, because the mean of its divisors is an integer number (1519128).

Almost surely, 2^20057190 is an apocalyptic number.

20057190 is an abundant number, since it is smaller than the sum of its proper divisors (28554906).

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

20057190 is a wasteful number, since it uses less digits than its factorization.

20057190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6604.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 20057190 is about 4478.5254269681. The cubic root of 20057190 is about 271.7002446776.

It can be divided in two parts, 200571 and 90, that added together give a triangular number (200661 = T₆₃₃).

The spelling of 20057190 in words is "twenty million, fifty-seven thousand, one hundred ninety".