20926842 has 8 divisors (see below), whose sum is σ = 41853696. Its totient is φ = 6975612.

The previous prime is 20926831. The next prime is 20926859. The reversal of 20926842 is 24862902.

It is a sphenic number, since it is the product of 3 distinct primes.

20926842 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1743898 + ... + 1743909.

It is an arithmetic number, because the mean of its divisors is an integer number (5231712).

Almost surely, 2^20926842 is an apocalyptic number.

20926842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20926842 is a wasteful number, since it uses less digits than its factorization.

20926842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487812.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20926842 is about 4574.5865386940. The cubic root of 20926842 is about 275.5716680971.

The spelling of 20926842 in words is "twenty million, nine hundred twenty-six thousand, eight hundred forty-two".