20091446 has 4 divisors (see below), whose sum is σ = 30137172. Its totient is φ = 10045722.

The previous prime is 20091431. The next prime is 20091451. The reversal of 20091446 is 64419002.

It is a semiprime because it is the product of two primes.

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, 5022860 + ... + 5022863.

It is an arithmetic number, because the mean of its divisors is an integer number (7534293).

Almost surely, 2^20091446 is an apocalyptic number.

20091446 is a deficient number, since it is larger than the sum of its proper divisors (10045726).

20091446 is a wasteful number, since it uses less digits than its factorization.

20091446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045725.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20091446 is about 4482.3482684861. The cubic root of 20091446 is about 271.8548371184.

The spelling of 20091446 in words is "twenty million, ninety-one thousand, four hundred forty-six".