16428313 has 4 divisors (see below), whose sum is σ = 17921808. Its totient is φ = 14934820.

The previous prime is 16428301. The next prime is 16428319. The reversal of 16428313 is 31382461.

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.

It is a cyclic number.

It is not a de Polignac number, because 16428313 - 2¹³ = 16420121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16428319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746731 + ... + 746752.

It is an arithmetic number, because the mean of its divisors is an integer number (4480452).

Almost surely, 2^16428313 is an apocalyptic number.

It is an amenable number.

16428313 is a deficient number, since it is larger than the sum of its proper divisors (1493495).

16428313 is a wasteful number, since it uses less digits than its factorization.

16428313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493494.

The product of its digits is 3456, while the sum is 28.

The square root of 16428313 is about 4053.1855373274. The cubic root of 16428313 is about 254.2129416894.

The spelling of 16428313 in words is "sixteen million, four hundred twenty-eight thousand, three hundred thirteen".