20841892 has 6 divisors (see below), whose sum is σ = 36473318. Its totient is φ = 10420944.

The previous prime is 20841883. The next prime is 20841911. The reversal of 20841892 is 29814802.

It can be written as a sum of positive squares in only one way, i.e., 14561856 + 6280036 = 3816^2 + 2506^2 .

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, 2605233 + ... + 2605240.

Almost surely, 2^20841892 is an apocalyptic number.

It is an amenable number.

20841892 is a deficient number, since it is larger than the sum of its proper divisors (15631426).

20841892 is a wasteful number, since it uses less digits than its factorization.

20841892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5210477 (or 5210475 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 20841892 is about 4565.2921045646. The cubic root of 20841892 is about 275.1982790421.

The spelling of 20841892 in words is "twenty million, eight hundred forty-one thousand, eight hundred ninety-two".