16028505 has 24 divisors (see below), whose sum is σ = 28005120. Its totient is φ = 8480160.

The previous prime is 16028491. The next prime is 16028531. The reversal of 16028505 is 50582061.

16028505 is a `hidden beast` number, since 1 + 602 + 8 + 50 + 5 = 666.

It is not a de Polignac number, because 16028505 - 2⁴ = 16028489 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4536 + ... + 7254.

It is an arithmetic number, because the mean of its divisors is an integer number (1166880).

Almost surely, 2^16028505 is an apocalyptic number.

16028505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16028505 is a deficient number, since it is larger than the sum of its proper divisors (11976615).

16028505 is a wasteful number, since it uses less digits than its factorization.

16028505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861 (or 2858 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 16028505 is about 4003.5615394296. The cubic root of 16028505 is about 252.1337630744.

The spelling of 16028505 in words is "sixteen million, twenty-eight thousand, five hundred five".