22315040 has 96 divisors (see below), whose sum is σ = 59512320. Its totient is φ = 7833600.

The previous prime is 22315031. The next prime is 22315049. The reversal of 22315040 is 4051322.

It is an interprime number because it is at equal distance from previous prime (22315031) and next prime (22315049).

It is a super-3 number, since 3×22315040³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (22315049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54356 + ... + 54764.

It is an arithmetic number, because the mean of its divisors is an integer number (619920).

Almost surely, 2^22315040 is an apocalyptic number.

22315040 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 22315040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29756160).

22315040 is an abundant number, since it is smaller than the sum of its proper divisors (37197280).

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

22315040 is a wasteful number, since it uses less digits than its factorization.

22315040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22315040 is about 4723.8797613826. The cubic root of 22315040 is about 281.5351057850.

Adding to 22315040 its reverse (4051322), we get a palindrome (26366362).

The spelling of 22315040 in words is "twenty-two million, three hundred fifteen thousand, forty".