22780933 has 6 divisors (see below), whose sum is σ = 26500326. Its totient is φ = 19526472.

The previous prime is 22780931. The next prime is 22780973. The reversal of 22780933 is 33908722.

It can be written as a sum of positive squares in only one way, i.e., 22724289 + 56644 = 4767^2 + 238^2 .

It is not a de Polignac number, because 22780933 - 2¹ = 22780931 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 (22780931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 232410 + ... + 232507.

It is an arithmetic number, because the mean of its divisors is an integer number (4416721).

Almost surely, 2^22780933 is an apocalyptic number.

It is an amenable number.

22780933 is a deficient number, since it is larger than the sum of its proper divisors (3719393).

22780933 is an equidigital number, since it uses as much as digits as its factorization.

22780933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464931 (or 464924 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 22780933 is about 4772.9375650641. The cubic root of 22780933 is about 283.4809213397.

The spelling of 22780933 in words is "twenty-two million, seven hundred eighty thousand, nine hundred thirty-three".