20091594 has 8 divisors (see below), whose sum is σ = 40183200. Its totient is φ = 6697196.

The previous prime is 20091587. The next prime is 20091613. The reversal of 20091594 is 49519002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

20091594 is an admirable 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 in 3 ways as a sum of consecutive naturals, for example, 1674294 + ... + 1674305.

It is an arithmetic number, because the mean of its divisors is an integer number (5022900).

Almost surely, 2^20091594 is an apocalyptic number.

20091594 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20091594 is a wasteful number, since it uses less digits than its factorization.

20091594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348604.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20091594 is about 4482.3647776592. The cubic root of 20091594 is about 271.8555046399.

The spelling of 20091594 in words is "twenty million, ninety-one thousand, five hundred ninety-four".