16385390 has 32 divisors (see below), whose sum is σ = 34145280. Its totient is φ = 5544864.

The previous prime is 16385389. The next prime is 16385401. The reversal of 16385390 is 9358361.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 16385390.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4049 + ... + 7011.

It is an arithmetic number, because the mean of its divisors is an integer number (1067040).

Almost surely, 2^16385390 is an apocalyptic number.

16385390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16385390 is an abundant number, since it is smaller than the sum of its proper divisors (17759890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16385390 is a wasteful number, since it uses less digits than its factorization.

16385390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 16385390 is about 4047.8871031688. The cubic root of 16385390 is about 253.9913506882.

The spelling of 16385390 in words is "sixteen million, three hundred eighty-five thousand, three hundred ninety".