22740816 has 80 divisors (see below), whose sum is σ = 68459904. Its totient is φ = 6369792.

The previous prime is 22740811. The next prime is 22740833. The reversal of 22740816 is 61804722.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22740811) 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, 17170 + ... + 18446.

Almost surely, 2^22740816 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 22740816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34229952).

22740816 is an abundant number, since it is smaller than the sum of its proper divisors (45719088).

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

22740816 is a wasteful number, since it uses less digits than its factorization.

22740816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 22740816 is about 4768.7331651079. The cubic root of 22740816 is about 283.3144211906.

The spelling of 22740816 in words is "twenty-two million, seven hundred forty thousand, eight hundred sixteen".