16428893 has 4 divisors (see below), whose sum is σ = 17692668. Its totient is φ = 15165120.

The previous prime is 16428871. The next prime is 16428913. The reversal of 16428893 is 39882461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 850084 + 15578809 = 922^2 + 3947^2 .

It is a cyclic number.

It is not a de Polignac number, because 16428893 - 2⁶ = 16428829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16428893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16428493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631868 + ... + 631893.

It is an arithmetic number, because the mean of its divisors is an integer number (4423167).

Almost surely, 2^16428893 is an apocalyptic number.

16428893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16428893 is a deficient number, since it is larger than the sum of its proper divisors (1263775).

16428893 is a wasteful number, since it uses less digits than its factorization.

16428893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263774.

The product of its digits is 82944, while the sum is 41.

The square root of 16428893 is about 4053.2570853574. The cubic root of 16428893 is about 254.2159333086.

The spelling of 16428893 in words is "sixteen million, four hundred twenty-eight thousand, eight hundred ninety-three".