16398634 has 24 divisors (see below), whose sum is σ = 30123360. Its totient is φ = 6657336.

The previous prime is 16398623. The next prime is 16398643. The reversal of 16398634 is 43689361.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 2542 + ... + 6265.

It is an arithmetic number, because the mean of its divisors is an integer number (1255140).

Almost surely, 2^16398634 is an apocalyptic number.

16398634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16398634 is a deficient number, since it is larger than the sum of its proper divisors (13724726).

16398634 is a wasteful number, since it uses less digits than its factorization.

16398634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842 (or 8835 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 16398634 is about 4049.5226879226. The cubic root of 16398634 is about 254.0597643897.

The spelling of 16398634 in words is "sixteen million, three hundred ninety-eight thousand, six hundred thirty-four".