22780799 has 4 divisors (see below), whose sum is σ = 24120864. Its totient is φ = 21440736.

The previous prime is 22780783. The next prime is 22780801. The reversal of 22780799 is 99708722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99708722 = 2 ⋅49854361.

It is a cyclic number.

It is not a de Polignac number, because 22780799 - 2⁴ = 22780783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22780729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670007 + ... + 670040.

It is an arithmetic number, because the mean of its divisors is an integer number (6030216).

Almost surely, 2^22780799 is an apocalyptic number.

22780799 is a deficient number, since it is larger than the sum of its proper divisors (1340065).

22780799 is a wasteful number, since it uses less digits than its factorization.

22780799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340064.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 22780799 is about 4772.9235275667. The cubic root of 22780799 is about 283.4803655164.

The spelling of 22780799 in words is "twenty-two million, seven hundred eighty thousand, seven hundred ninety-nine".