22072532 has 6 divisors (see below), whose sum is σ = 38626938. Its totient is φ = 11036264.

The previous prime is 22072529. The next prime is 22072537. The reversal of 22072532 is 23527022.

It can be written as a sum of positive squares in only one way, i.e., 11600836 + 10471696 = 3406^2 + 3236^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22072498 and 22072507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22072537) 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, 2759063 + ... + 2759070.

It is an arithmetic number, because the mean of its divisors is an integer number (6437823).

Almost surely, 2^22072532 is an apocalyptic number.

It is an amenable number.

22072532 is a deficient number, since it is larger than the sum of its proper divisors (16554406).

22072532 is a wasteful number, since it uses less digits than its factorization.

22072532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518137 (or 5518135 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 22072532 is about 4698.1413346131. The cubic root of 22072532 is about 280.5115309035.

Adding to 22072532 its reverse (23527022), we get a palindrome (45599554).

The spelling of 22072532 in words is "twenty-two million, seventy-two thousand, five hundred thirty-two".