19927842 has 32 divisors (see below), whose sum is σ = 46039104. Its totient is φ = 5683200.

The previous prime is 19927819. The next prime is 19927879. The reversal of 19927842 is 24872991.

It is a junction number, because it is equal to n+sod(n) for n = 19927794 and 19927803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7759 + ... + 10002.

It is an arithmetic number, because the mean of its divisors is an integer number (1438722).

Almost surely, 2^19927842 is an apocalyptic number.

19927842 is an abundant number, since it is smaller than the sum of its proper divisors (26111262).

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

19927842 is a wasteful number, since it uses less digits than its factorization.

19927842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17794.

The product of its digits is 72576, while the sum is 42.

The square root of 19927842 is about 4464.0611554951. The cubic root of 19927842 is about 271.1149233665.

The spelling of 19927842 in words is "nineteen million, nine hundred twenty-seven thousand, eight hundred forty-two".