16406722 has 4 divisors (see below), whose sum is σ = 24610086. Its totient is φ = 8203360.

The previous prime is 16406711. The next prime is 16406773. The reversal of 16406722 is 22760461.

16406722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 16394401 + 12321 = 4049^2 + 111^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4101679 + ... + 4101682.

Almost surely, 2^16406722 is an apocalyptic number.

16406722 is a deficient number, since it is larger than the sum of its proper divisors (8203364).

16406722 is an equidigital number, since it uses as much as digits as its factorization.

16406722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8203363.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 16406722 is about 4050.5212010308. The cubic root of 16406722 is about 254.1015259503.

The spelling of 16406722 in words is "sixteen million, four hundred six thousand, seven hundred twenty-two".