19923190 has 32 divisors (see below), whose sum is σ = 41944320. Its totient is φ = 6670944.

The previous prime is 19923161. The next prime is 19923193. The reversal of 19923190 is 9132991.

It is a super-2 number, since 2×19923190² = 793866999552200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19923193) 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, 300 + ... + 6319.

It is an arithmetic number, because the mean of its divisors is an integer number (1310760).

Almost surely, 2^19923190 is an apocalyptic number.

19923190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19923190 is an abundant number, since it is smaller than the sum of its proper divisors (22021130).

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

19923190 is a wasteful number, since it uses less digits than its factorization.

19923190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 19923190 is about 4463.5400748733. The cubic root of 19923190 is about 271.0938251667.

The spelling of 19923190 in words is "nineteen million, nine hundred twenty-three thousand, one hundred ninety".