16764394 has 4 divisors (see below), whose sum is σ = 25146594. Its totient is φ = 8382196.

The previous prime is 16764389. The next prime is 16764421. The reversal of 16764394 is 49346761.

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., 14402025 + 2362369 = 3795^2 + 1537^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4191097 + ... + 4191100.

Almost surely, 2^16764394 is an apocalyptic number.

16764394 is a deficient number, since it is larger than the sum of its proper divisors (8382200).

16764394 is an equidigital number, since it uses as much as digits as its factorization.

16764394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382199.

The product of its digits is 108864, while the sum is 40.

The square root of 16764394 is about 4094.4345152902. The cubic root of 16764394 is about 255.9347673147.

The spelling of 16764394 in words is "sixteen million, seven hundred sixty-four thousand, three hundred ninety-four".