20932994 has 4 divisors (see below), whose sum is σ = 31399494. Its totient is φ = 10466496.

The previous prime is 20932993. The next prime is 20932997. The reversal of 20932994 is 49923902.

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., 17181025 + 3751969 = 4145^2 + 1937^2 .

It is not an unprimeable number, because it can be changed into a prime (20932991) by changing a digit.

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, 5233247 + ... + 5233250.

Almost surely, 2^20932994 is an apocalyptic number.

20932994 is a deficient number, since it is larger than the sum of its proper divisors (10466500).

20932994 is a wasteful number, since it uses less digits than its factorization.

20932994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10466499.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 20932994 is about 4575.2588997782. The cubic root of 20932994 is about 275.5986693172.

The spelling of 20932994 in words is "twenty million, nine hundred thirty-two thousand, nine hundred ninety-four".