16428747 has 4 divisors (see below), whose sum is σ = 21905000. Its totient is φ = 10952496.

The previous prime is 16428743. The next prime is 16428751. The reversal of 16428747 is 74782461.

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

It is an interprime number because it is at equal distance from previous prime (16428743) and next prime (16428751).

It is not a de Polignac number, because 16428747 - 2² = 16428743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16428743) 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, 2738122 + ... + 2738127.

It is an arithmetic number, because the mean of its divisors is an integer number (5476250).

Almost surely, 2^16428747 is an apocalyptic number.

16428747 is a deficient number, since it is larger than the sum of its proper divisors (5476253).

16428747 is an equidigital number, since it uses as much as digits as its factorization.

16428747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476252.

The product of its digits is 75264, while the sum is 39.

The square root of 16428747 is about 4053.2390751102. The cubic root of 16428747 is about 254.2151802524.

The spelling of 16428747 in words is "sixteen million, four hundred twenty-eight thousand, seven hundred forty-seven".