19023420 has 96 divisors (see below), whose sum is σ = 59411520. Its totient is φ = 4521216.

The previous prime is 19023413. The next prime is 19023421. The reversal of 19023420 is 2432091.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 377 × 145 × 348.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19023421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 655966 + ... + 655994.

It is an arithmetic number, because the mean of its divisors is an integer number (618870).

Almost surely, 2^19023420 is an apocalyptic number.

19023420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19023420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29705760).

19023420 is an abundant number, since it is smaller than the sum of its proper divisors (40388100).

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

19023420 is a wasteful number, since it uses less digits than its factorization.

19023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 19023420 is about 4361.5845744408. The cubic root of 19023420 is about 266.9497583930.

The spelling of 19023420 in words is "nineteen million, twenty-three thousand, four hundred twenty".