22012926 has 48 divisors (see below), whose sum is σ = 50516784. Its totient is φ = 6369792.

The previous prime is 22012901. The next prime is 22012927. The reversal of 22012926 is 62921022.

It is a super-3 number, since 3×22012926³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 22012896 and 22012905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16600 + ... + 17876.

It is an arithmetic number, because the mean of its divisors is an integer number (1052433).

Almost surely, 2^22012926 is an apocalyptic number.

22012926 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22012926 is the 3831-st pentagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25258392).

22012926 is an abundant number, since it is smaller than the sum of its proper divisors (28503858).

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

22012926 is a wasteful number, since it uses less digits than its factorization.

22012926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 22012926 is about 4691.7934737156. The cubic root of 22012926 is about 280.2587998371.

Adding to 22012926 its reverse (62921022), we get a palindrome (84933948).

The spelling of 22012926 in words is "twenty-two million, twelve thousand, nine hundred twenty-six".