16398434 has 8 divisors (see below), whose sum is σ = 26489820. Its totient is φ = 7568496.

The previous prime is 16398433. The next prime is 16398443. The reversal of 16398434 is 43489361.

16398434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11580409 + 4818025 = 3403^2 + 2195^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16398433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315329 + ... + 315380.

Almost surely, 2^16398434 is an apocalyptic number.

16398434 is a deficient number, since it is larger than the sum of its proper divisors (10091386).

16398434 is a wasteful number, since it uses less digits than its factorization.

16398434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630724.

The product of its digits is 62208, while the sum is 38.

The square root of 16398434 is about 4049.4979935790. The cubic root of 16398434 is about 254.0587315362.

The spelling of 16398434 in words is "sixteen million, three hundred ninety-eight thousand, four hundred thirty-four".