20072894 has 8 divisors (see below), whose sum is σ = 30132648. Its totient is φ = 10028680.

The previous prime is 20072867. The next prime is 20072917. The reversal of 20072894 is 49827002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20072894.

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 3 ways as a sum of consecutive naturals, for example, 209 + ... + 6339.

It is an arithmetic number, because the mean of its divisors is an integer number (3766581).

Almost surely, 2^20072894 is an apocalyptic number.

20072894 is a deficient number, since it is larger than the sum of its proper divisors (10059754).

20072894 is a wasteful number, since it uses less digits than its factorization.

20072894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 20072894 is about 4480.2783395678. The cubic root of 20072894 is about 271.7711364218.

Adding to 20072894 its reverse (49827002), we get a palindrome (69899896).

The spelling of 20072894 in words is "twenty million, seventy-two thousand, eight hundred ninety-four".