20675572 has 24 divisors (see below), whose sum is σ = 38343200. Its totient is φ = 9727776.

The previous prime is 20675569. The next prime is 20675573. The reversal of 20675572 is 27557602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20675573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11554 + ... + 13222.

Almost surely, 2^20675572 is an apocalyptic number.

It is an amenable number.

20675572 is a deficient number, since it is larger than the sum of its proper divisors (17667628).

20675572 is a wasteful number, since it uses less digits than its factorization.

20675572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 20675572 is about 4547.0399162532. The cubic root of 20675572 is about 274.4642882176.

The spelling of 20675572 in words is "twenty million, six hundred seventy-five thousand, five hundred seventy-two".