22820737 has 2 divisors, whose sum is σ = 22820738. Its totient is φ = 22820736.

The previous prime is 22820731. The next prime is 22820741. The reversal of 22820737 is 73702822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11771761 + 11048976 = 3431^2 + 3324^2 .

It is a cyclic number.

It is not a de Polignac number, because 22820737 - 2²³ = 14432129 is a prime.

It is a Chen prime.

It is equal to p_1437619 and since 22820737 and 1437619 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 22820699 and 22820708.

It is not a weakly prime, because it can be changed into another prime (22820731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11410368 + 11410369.

It is an arithmetic number, because the mean of its divisors is an integer number (11410369).

Almost surely, 2^22820737 is an apocalyptic number.

It is an amenable number.

22820737 is a deficient number, since it is larger than the sum of its proper divisors (1).

22820737 is an equidigital number, since it uses as much as digits as its factorization.

22820737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 22820737 is about 4777.1055043823. The cubic root of 22820737 is about 283.6459293482.

The spelling of 22820737 in words is "twenty-two million, eight hundred twenty thousand, seven hundred thirty-seven".