20555952 has 20 divisors (see below), whose sum is σ = 53103000. Its totient is φ = 6851968.

The previous prime is 20555947. The next prime is 20555957. The reversal of 20555952 is 25955502.

It is an interprime number because it is at equal distance from previous prime (20555947) and next prime (20555957).

It is not an unprimeable number, because it can be changed into a prime (20555957) 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 in 3 ways as a sum of consecutive naturals, for example, 214077 + ... + 214172.

It is an arithmetic number, because the mean of its divisors is an integer number (2655150).

Almost surely, 2^20555952 is an apocalyptic number.

It is an amenable number.

20555952 is an abundant number, since it is smaller than the sum of its proper divisors (32547048).

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

20555952 is a wasteful number, since it uses less digits than its factorization.

20555952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428260 (or 428254 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 20555952 is about 4533.8672234639. The cubic root of 20555952 is about 273.9339532144.

The spelling of 20555952 in words is "twenty million, five hundred fifty-five thousand, nine hundred fifty-two".