20211952 has 10 divisors (see below), whose sum is σ = 39160688. Its totient is φ = 10105968.

The previous prime is 20211949. The next prime is 20211967. The reversal of 20211952 is 25911202.

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 as a sum of consecutive naturals, namely, 631608 + ... + 631639.

Almost surely, 2^20211952 is an apocalyptic number.

It is an amenable number.

20211952 is a deficient number, since it is larger than the sum of its proper divisors (18948736).

20211952 is a wasteful number, since it uses less digits than its factorization.

20211952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263255 (or 1263249 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 20211952 is about 4495.7704567738. The cubic root of 20211952 is about 272.3972712683.

The spelling of 20211952 in words is "twenty million, two hundred eleven thousand, nine hundred fifty-two".