21926996 has 48 divisors (see below), whose sum is σ = 48074880. Its totient is φ = 8519040.

The previous prime is 21926959. The next prime is 21927011. The reversal of 21926996 is 69962912.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20966 + ... + 21986.

It is an arithmetic number, because the mean of its divisors is an integer number (1001560).

Almost surely, 2^21926996 is an apocalyptic number.

21926996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21926996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24037440).

21926996 is an abundant number, since it is smaller than the sum of its proper divisors (26147884).

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

21926996 is a wasteful number, since it uses less digits than its factorization.

21926996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104 (or 1102 counting only the distinct ones).

The product of its digits is 104976, while the sum is 44.

The square root of 21926996 is about 4682.6270404550. The cubic root of 21926996 is about 279.8936500874.

It can be divided in two parts, 21926 and 996, that added together give a palindrome (22922).

The spelling of 21926996 in words is "twenty-one million, nine hundred twenty-six thousand, nine hundred ninety-six".