22910040 has 96 divisors (see below), whose sum is σ = 77248080. Its totient is φ = 6106752.

The previous prime is 22910039. The next prime is 22910051. The reversal of 22910040 is 4001922.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22909995 and 22910022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8542 + ... + 10898.

Almost surely, 2^22910040 is an apocalyptic number.

22910040 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 22910040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38624040).

22910040 is an abundant number, since it is smaller than the sum of its proper divisors (54338040).

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

22910040 is a wasteful number, since it uses less digits than its factorization.

22910040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383 (or 2367 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 22910040 is about 4786.4433559795. The cubic root of 22910040 is about 284.0154392188.

Adding to 22910040 its reverse (4001922), we get a palindrome (26911962).

The spelling of 22910040 in words is "twenty-two million, nine hundred ten thousand, forty".