22820445 has 24 divisors (see below), whose sum is σ = 39955032. Its totient is φ = 12048000.

The previous prime is 22820431. The next prime is 22820449. The reversal of 22820445 is 54402822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12916836 + 9903609 = 3594^2 + 3147^2 .

It is not a de Polignac number, because 22820445 - 2⁴ = 22820429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22820449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2035 + ... + 7055.

It is an arithmetic number, because the mean of its divisors is an integer number (1664793).

Almost surely, 2^22820445 is an apocalyptic number.

It is an amenable number.

22820445 is a deficient number, since it is larger than the sum of its proper divisors (17134587).

22820445 is a wasteful number, since it uses less digits than its factorization.

22820445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133 (or 5130 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 22820445 is about 4777.0749418446. The cubic root of 22820445 is about 283.6447195573.

The spelling of 22820445 in words is "twenty-two million, eight hundred twenty thousand, four hundred forty-five".