16397494 has 8 divisors (see below), whose sum is σ = 25890840. Its totient is φ = 7767216.

The previous prime is 16397467. The next prime is 16397509. The reversal of 16397494 is 49479361.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16397494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215719 + ... + 215794.

It is an arithmetic number, because the mean of its divisors is an integer number (3236355).

Almost surely, 2^16397494 is an apocalyptic number.

16397494 is a deficient number, since it is larger than the sum of its proper divisors (9493346).

16397494 is a wasteful number, since it uses less digits than its factorization.

16397494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431534.

The product of its digits is 163296, while the sum is 43.

The square root of 16397494 is about 4049.3819281466. The cubic root of 16397494 is about 254.0538770122.

The spelling of 16397494 in words is "sixteen million, three hundred ninety-seven thousand, four hundred ninety-four".