22661496 has 192 divisors, whose sum is σ = 75479040. Its totient is φ = 6048000.

The previous prime is 22661491. The next prime is 22661497. The reversal of 22661496 is 69416622.

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 22661496.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22661491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 319141 + ... + 319211.

It is an arithmetic number, because the mean of its divisors is an integer number (393120).

Almost surely, 2^22661496 is an apocalyptic number.

22661496 is a gapful number since it is divisible by the number (26) 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 22661496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37739520).

22661496 is an abundant number, since it is smaller than the sum of its proper divisors (52817544).

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

22661496 is a wasteful number, since it uses less digits than its factorization.

22661496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 131 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 22661496 is about 4760.4092261065. The cubic root of 22661496 is about 282.9846370897.

The spelling of 22661496 in words is "twenty-two million, six hundred sixty-one thousand, four hundred ninety-six".