22634340 has 96 divisors (see below), whose sum is σ = 67178496. Its totient is φ = 5685120.

The previous prime is 22634333. The next prime is 22634341. The reversal of 22634340 is 4343622.

22634340 = 170² + 171² + ... + 417².

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22634340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22634341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79839 + ... + 80121.

It is an arithmetic number, because the mean of its divisors is an integer number (699776).

Almost surely, 2^22634340 is an apocalyptic number.

22634340 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 22634340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33589248).

22634340 is an abundant number, since it is smaller than the sum of its proper divisors (44544156).

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

22634340 is a wasteful number, since it uses less digits than its factorization.

22634340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 22634340 is about 4757.5560953078. The cubic root of 22634340 is about 282.8715553751.

Adding to 22634340 its reverse (4343622), we get a palindrome (26977962).

The spelling of 22634340 in words is "twenty-two million, six hundred thirty-four thousand, three hundred forty".