22020726 has 64 divisors (see below), whose sum is σ = 55996416. Its totient is φ = 5616000.

The previous prime is 22020709. The next prime is 22020749. The reversal of 22020726 is 62702022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16276 + ... + 17576.

It is an arithmetic number, because the mean of its divisors is an integer number (874944).

Almost surely, 2^22020726 is an apocalyptic number.

22020726 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22020726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27998208).

22020726 is an abundant number, since it is smaller than the sum of its proper divisors (33975690).

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

22020726 is a wasteful number, since it uses less digits than its factorization.

22020726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22020726 is about 4692.6246387283. The cubic root of 22020726 is about 280.2918979737.

Adding to 22020726 its reverse (62702022), we get a palindrome (84722748).

The spelling of 22020726 in words is "twenty-two million, twenty thousand, seven hundred twenty-six".