20091862 has 12 divisors (see below), whose sum is σ = 35058420. Its totient is φ = 8610756.

The previous prime is 20091853. The next prime is 20091881. The reversal of 20091862 is 26819002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20091862.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102412 + ... + 102607.

It is an arithmetic number, because the mean of its divisors is an integer number (2921535).

Almost surely, 2^20091862 is an apocalyptic number.

20091862 is a deficient number, since it is larger than the sum of its proper divisors (14966558).

20091862 is a wasteful number, since it uses less digits than its factorization.

20091862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205035 (or 205028 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20091862 is about 4482.3946724937. The cubic root of 20091862 is about 271.8567133867.

The spelling of 20091862 in words is "twenty million, ninety-one thousand, eight hundred sixty-two".