22723387 has 2 divisors, whose sum is σ = 22723388. Its totient is φ = 22723386.

The previous prime is 22723369. The next prime is 22723397. The reversal of 22723387 is 78332722.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22723387 is a prime.

It is not a weakly prime, because it can be changed into another prime (22723397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11361693 + 11361694.

It is an arithmetic number, because the mean of its divisors is an integer number (11361694).

Almost surely, 2^22723387 is an apocalyptic number.

22723387 is a deficient number, since it is larger than the sum of its proper divisors (1).

22723387 is an equidigital number, since it uses as much as digits as its factorization.

22723387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 34.

The square root of 22723387 is about 4766.9053902925. The cubic root of 22723387 is about 283.2420234795.

The spelling of 22723387 in words is "twenty-two million, seven hundred twenty-three thousand, three hundred eighty-seven".