22342290 has 48 divisors (see below), whose sum is σ = 56619648. Its totient is φ = 5641632.

The previous prime is 22342283. The next prime is 22342291. The reversal of 22342290 is 9224322.

It is a super-3 number, since 3×22342290³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22342290.

It is not an unprimeable number, because it can be changed into a prime (22342291) 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, 9799 + ... + 11861.

It is an arithmetic number, because the mean of its divisors is an integer number (1179576).

Almost surely, 2^22342290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22342290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28309824).

22342290 is an abundant number, since it is smaller than the sum of its proper divisors (34277358).

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

22342290 is a wasteful number, since it uses less digits than its factorization.

22342290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111 (or 2092 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22342290 is about 4726.7631630959. The cubic root of 22342290 is about 281.6496579874.

The spelling of 22342290 in words is "twenty-two million, three hundred forty-two thousand, two hundred ninety".