22820432 has 10 divisors (see below), whose sum is σ = 44214618. Its totient is φ = 11410208.

The previous prime is 22820431. The next prime is 22820449. The reversal of 22820432 is 23402822.

It can be written as a sum of positive squares in only one way, i.e., 19149376 + 3671056 = 4376^2 + 1916^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22820398 and 22820407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22820431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713123 + ... + 713154.

Almost surely, 2^22820432 is an apocalyptic number.

It is an amenable number.

22820432 is a deficient number, since it is larger than the sum of its proper divisors (21394186).

22820432 is a wasteful number, since it uses less digits than its factorization.

22820432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426285 (or 1426279 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 22820432 is about 4777.0735811792. The cubic root of 22820432 is about 283.6446656965.

The spelling of 22820432 in words is "twenty-two million, eight hundred twenty thousand, four hundred thirty-two".