20416842 has 24 divisors (see below), whose sum is σ = 44422560. Its totient is φ = 6777000.

The previous prime is 20416829. The next prime is 20416853. The reversal of 20416842 is 24861402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2259 + ... + 6777.

It is an arithmetic number, because the mean of its divisors is an integer number (1850940).

Almost surely, 2^20416842 is an apocalyptic number.

It is a pronic number, being equal to 4518×4519.

20416842 is an abundant number, since it is smaller than the sum of its proper divisors (24005718).

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

20416842 is a wasteful number, since it uses less digits than its factorization.

20416842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778 (or 4775 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 20416842 is about 4518.4999723360. The cubic root of 20416842 is about 273.3146153485.

The spelling of 20416842 in words is "twenty million, four hundred sixteen thousand, eight hundred forty-two".