19242020 has 24 divisors (see below), whose sum is σ = 46181184. Its totient is φ = 6597216.

The previous prime is 19242017. The next prime is 19242029. The reversal of 19242020 is 2024291.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 19241983 and 19242001.

It is not an unprimeable number, because it can be changed into a prime (19242029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68582 + ... + 68861.

It is an arithmetic number, because the mean of its divisors is an integer number (1924216).

Almost surely, 2^19242020 is an apocalyptic number.

19242020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19242020 is an abundant number, since it is smaller than the sum of its proper divisors (26939164).

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

19242020 is a wasteful number, since it uses less digits than its factorization.

19242020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137459 (or 137457 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 19242020 is about 4386.5726940289. The cubic root of 19242020 is about 267.9683819534.

The spelling of 19242020 in words is "nineteen million, two hundred forty-two thousand, twenty".