20929952 has 24 divisors (see below), whose sum is σ = 41674500. Its totient is φ = 10345984.

The previous prime is 20929939. The next prime is 20929957. The reversal of 20929952 is 25992902.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20830096 + 99856 = 4564^2 + 316^2 .

It is not an unprimeable number, because it can be changed into a prime (20929957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827 + ... + 6522.

Almost surely, 2^20929952 is an apocalyptic number.

It is an amenable number.

20929952 is a deficient number, since it is larger than the sum of its proper divisors (20744548).

20929952 is an equidigital number, since it uses as much as digits as its factorization.

20929952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7448 (or 7440 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 20929952 is about 4574.9264474962. The cubic root of 20929952 is about 275.5853185950.

The spelling of 20929952 in words is "twenty million, nine hundred twenty-nine thousand, nine hundred fifty-two".