20103994 has 4 divisors (see below), whose sum is σ = 30155994. Its totient is φ = 10051996.

The previous prime is 20103977. The next prime is 20104003. The reversal of 20103994 is 49930102.

It is a happy number.

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., 15108769 + 4995225 = 3887^2 + 2235^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025997 + ... + 5026000.

Almost surely, 2^20103994 is an apocalyptic number.

20103994 is a deficient number, since it is larger than the sum of its proper divisors (10052000).

20103994 is a wasteful number, since it uses less digits than its factorization.

20103994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051999.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 20103994 is about 4483.7477627538. The cubic root of 20103994 is about 271.9114204787.

The spelling of 20103994 in words is "twenty million, one hundred three thousand, nine hundred ninety-four".