16390357 has 4 divisors (see below), whose sum is σ = 16739136. Its totient is φ = 16041580.

The previous prime is 16390343. The next prime is 16390373. The reversal of 16390357 is 75309361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75309361 = 199 ⋅378439.

It is a cyclic number.

It is not a de Polignac number, because 16390357 - 2⁷ = 16390229 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 (16390337) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 174319 + ... + 174412.

It is an arithmetic number, because the mean of its divisors is an integer number (4184784).

Almost surely, 2^16390357 is an apocalyptic number.

It is an amenable number.

16390357 is a deficient number, since it is larger than the sum of its proper divisors (348779).

16390357 is an equidigital number, since it uses as much as digits as its factorization.

16390357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348778.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 16390357 is about 4048.5005866370. The cubic root of 16390357 is about 254.0170127278.

The spelling of 16390357 in words is "sixteen million, three hundred ninety thousand, three hundred fifty-seven".