20842926 has 16 divisors (see below), whose sum is σ = 44892624. Its totient is φ = 6413184.

The previous prime is 20842919. The next prime is 20842933. The reversal of 20842926 is 62924802.

It is an interprime number because it is at equal distance from previous prime (20842919) and next prime (20842933).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133531 + ... + 133686.

It is an arithmetic number, because the mean of its divisors is an integer number (2805789).

Almost surely, 2^20842926 is an apocalyptic number.

20842926 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20842926 is an abundant number, since it is smaller than the sum of its proper divisors (24049698).

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

20842926 is a wasteful number, since it uses less digits than its factorization.

20842926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267235.

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

The square root of 20842926 is about 4565.4053489258. The cubic root of 20842926 is about 275.2028299775.

It can be divided in two parts, 208 and 42926, that added together give a palindrome (43134).

The spelling of 20842926 in words is "twenty million, eight hundred forty-two thousand, nine hundred twenty-six".