20376634 has 4 divisors (see below), whose sum is σ = 30564954. Its totient is φ = 10188316.

The previous prime is 20376619. The next prime is 20376637. The reversal of 20376634 is 43667302.

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

It can be written as a sum of positive squares in only one way, i.e., 18948609 + 1428025 = 4353^2 + 1195^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20376596 and 20376605.

It is not an unprimeable number, because it can be changed into a prime (20376637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5094157 + ... + 5094160.

Almost surely, 2^20376634 is an apocalyptic number.

20376634 is a deficient number, since it is larger than the sum of its proper divisors (10188320).

20376634 is a wasteful number, since it uses less digits than its factorization.

20376634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10188319.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 20376634 is about 4514.0485154681. The cubic root of 20376634 is about 273.1350796497.

The spelling of 20376634 in words is "twenty million, three hundred seventy-six thousand, six hundred thirty-four".