22405783 has 2 divisors, whose sum is σ = 22405784. Its totient is φ = 22405782.

The previous prime is 22405771. The next prime is 22405787. The reversal of 22405783 is 38750422.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22405783 is a prime.

It is a super-2 number, since 2×22405783² = 1004038223686178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22405787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202891 + 11202892.

It is an arithmetic number, because the mean of its divisors is an integer number (11202892).

Almost surely, 2^22405783 is an apocalyptic number.

22405783 is a deficient number, since it is larger than the sum of its proper divisors (1).

22405783 is an equidigital number, since it uses as much as digits as its factorization.

22405783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 22405783 is about 4733.4747279351. The cubic root of 22405783 is about 281.9162058432.

The spelling of 22405783 in words is "twenty-two million, four hundred five thousand, seven hundred eighty-three".