22761396 has 72 divisors (see below), whose sum is σ = 67389504. Its totient is φ = 6341760.

The previous prime is 22761391. The next prime is 22761397. The reversal of 22761396 is 69316722.

It is a super-2 number, since 2×22761396² = 1036162295737632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22761396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22761391) 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, 9231 + ... + 11433.

Almost surely, 2^22761396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22761396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33694752).

22761396 is an abundant number, since it is smaller than the sum of its proper divisors (44628108).

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

22761396 is a wasteful number, since it uses less digits than its factorization.

22761396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261 (or 2256 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 22761396 is about 4770.8904829183. The cubic root of 22761396 is about 283.3998601184.

The spelling of 22761396 in words is "twenty-two million, seven hundred sixty-one thousand, three hundred ninety-six".