16228515 has 8 divisors (see below), whose sum is σ = 25965648. Its totient is φ = 8655200.

The previous prime is 16228507. The next prime is 16228517. The reversal of 16228515 is 51582261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16228515 - 2³ = 16228507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16228517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540936 + ... + 540965.

It is an arithmetic number, because the mean of its divisors is an integer number (3245706).

Almost surely, 2^16228515 is an apocalyptic number.

16228515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16228515 is a deficient number, since it is larger than the sum of its proper divisors (9737133).

16228515 is a wasteful number, since it uses less digits than its factorization.

16228515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081909.

The product of its digits is 4800, while the sum is 30.

The square root of 16228515 is about 4028.4631064464. The cubic root of 16228515 is about 253.1781723383.

The spelling of 16228515 in words is "sixteen million, two hundred twenty-eight thousand, five hundred fifteen".