16257397 has 16 divisors (see below), whose sum is σ = 18135040. Its totient is φ = 14478912.

The previous prime is 16257377. The next prime is 16257401. The reversal of 16257397 is 79375261.

16257397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16257397 - 2¹⁵ = 16224629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16257337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70879 + ... + 71107.

It is an arithmetic number, because the mean of its divisors is an integer number (1133440).

Almost surely, 2^16257397 is an apocalyptic number.

It is an amenable number.

16257397 is a deficient number, since it is larger than the sum of its proper divisors (1877643).

16257397 is a wasteful number, since it uses less digits than its factorization.

16257397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its digits is 79380, while the sum is 40.

The square root of 16257397 is about 4032.0462546950. The cubic root of 16257397 is about 253.3282776384.

The spelling of 16257397 in words is "sixteen million, two hundred fifty-seven thousand, three hundred ninety-seven".