20373994 has 4 divisors (see below), whose sum is σ = 30560994. Its totient is φ = 10186996.

The previous prime is 20373971. The next prime is 20374027. The reversal of 20373994 is 49937302.

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., 19918369 + 455625 = 4463^2 + 675^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5093497 + ... + 5093500.

Almost surely, 2^20373994 is an apocalyptic number.

20373994 is a deficient number, since it is larger than the sum of its proper divisors (10187000).

20373994 is a wasteful number, since it uses less digits than its factorization.

20373994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10186999.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 20373994 is about 4513.7560855678. The cubic root of 20373994 is about 273.1232833319.

The spelling of 20373994 in words is "twenty million, three hundred seventy-three thousand, nine hundred ninety-four".