22726620 has 144 divisors (see below), whose sum is σ = 83498688. Its totient is φ = 4884480.

The previous prime is 22726597. The next prime is 22726643. The reversal of 22726620 is 2662722.

It is an interprime number because it is at equal distance from previous prime (22726597) and next prime (22726643).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20890 + ... + 21950.

It is an arithmetic number, because the mean of its divisors is an integer number (579852).

Almost surely, 2^22726620 is an apocalyptic number.

22726620 is a gapful number since it is divisible by the number (20) 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 22726620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41749344).

22726620 is an abundant number, since it is smaller than the sum of its proper divisors (60772068).

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

22726620 is a wasteful number, since it uses less digits than its factorization.

22726620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 22726620 is about 4767.2444871225. The cubic root of 22726620 is about 283.2554557205.

The spelling of 22726620 in words is "twenty-two million, seven hundred twenty-six thousand, six hundred twenty".