16387228 has 24 divisors (see below), whose sum is σ = 33692400. Its totient is φ = 6875520.

The previous prime is 16387213. The next prime is 16387243. The reversal of 16387228 is 82278361.

16387228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16387213) and next prime (16387243).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13753 + ... + 14896.

It is an arithmetic number, because the mean of its divisors is an integer number (1403850).

Almost surely, 2^16387228 is an apocalyptic number.

It is an amenable number.

16387228 is an abundant number, since it is smaller than the sum of its proper divisors (17305172).

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

16387228 is a wasteful number, since it uses less digits than its factorization.

16387228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28677 (or 28675 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 16387228 is about 4048.1141288259. The cubic root of 16387228 is about 254.0008473322. Note that the first 3 decimals are identical.

The spelling of 16387228 in words is "sixteen million, three hundred eighty-seven thousand, two hundred twenty-eight".