22157532 has 36 divisors (see below), whose sum is σ = 56294056. Its totient is φ = 7348320.

The previous prime is 22157519. The next prime is 22157543. The reversal of 22157532 is 23575122.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 22157496 and 22157505.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 6138 + ... + 9054.

Almost surely, 2^22157532 is an apocalyptic number.

It is an amenable number.

22157532 is an abundant number, since it is smaller than the sum of its proper divisors (34136524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22157532 is a wasteful number, since it uses less digits than its factorization.

22157532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138 (or 3133 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 22157532 is about 4707.1787728957. The cubic root of 22157532 is about 280.8711473842.

The spelling of 22157532 in words is "twenty-two million, one hundred fifty-seven thousand, five hundred thirty-two".