22720326 has 16 divisors (see below), whose sum is σ = 45563904. Its totient is φ = 7552904.

The previous prime is 22720319. The next prime is 22720349. The reversal of 22720326 is 62302722.

It is a junction number, because it is equal to n+sod(n) for n = 22720296 and 22720305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2646 + ... + 7241.

It is an arithmetic number, because the mean of its divisors is an integer number (2847744).

Almost surely, 2^22720326 is an apocalyptic number.

22720326 is an abundant number, since it is smaller than the sum of its proper divisors (22843578).

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

22720326 is a wasteful number, since it uses less digits than its factorization.

22720326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 22720326 is about 4766.5843116429. The cubic root of 22720326 is about 283.2293046776.

The spelling of 22720326 in words is "twenty-two million, seven hundred twenty thousand, three hundred twenty-six".