20038582 has 4 divisors (see below), whose sum is σ = 30057876. Its totient is φ = 10019290.

The previous prime is 20038541. The next prime is 20038609. The reversal of 20038582 is 28583002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20038582.

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 as a sum of consecutive naturals, namely, 5009644 + ... + 5009647.

It is an arithmetic number, because the mean of its divisors is an integer number (7514469).

Almost surely, 2^20038582 is an apocalyptic number.

20038582 is a deficient number, since it is larger than the sum of its proper divisors (10019294).

20038582 is a wasteful number, since it uses less digits than its factorization.

20038582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10019293.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20038582 is about 4476.4474753983. The cubic root of 20038582 is about 271.6161956415.

It can be divided in two parts, 2003 and 8582, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 20038582 in words is "twenty million, thirty-eight thousand, five hundred eighty-two".