16812428 has 12 divisors (see below), whose sum is σ = 29725752. Its totient is φ = 8319360.

The previous prime is 16812413. The next prime is 16812437. The reversal of 16812428 is 82421861.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16812394 and 16812403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21278 + ... + 22053.

It is an arithmetic number, because the mean of its divisors is an integer number (2477146).

Almost surely, 2^16812428 is an apocalyptic number.

It is an amenable number.

16812428 is a deficient number, since it is larger than the sum of its proper divisors (12913324).

16812428 is a wasteful number, since it uses less digits than its factorization.

16812428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43432 (or 43430 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 16812428 is about 4100.2960868698. The cubic root of 16812428 is about 256.1789723428.

The spelling of 16812428 in words is "sixteen million, eight hundred twelve thousand, four hundred twenty-eight".