16505274 has 16 divisors (see below), whose sum is σ = 33054912. Its totient is φ = 5494368.

The previous prime is 16505273. The next prime is 16505303. The reversal of 16505274 is 47250561.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16505273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4867 + ... + 7529.

It is an arithmetic number, because the mean of its divisors is an integer number (2065932).

Almost surely, 2^16505274 is an apocalyptic number.

16505274 is an abundant number, since it is smaller than the sum of its proper divisors (16549638).

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

16505274 is a wasteful number, since it uses less digits than its factorization.

16505274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 16505274 is about 4062.6683349739. The cubic root of 16505274 is about 254.6092901663.

The spelling of 16505274 in words is "sixteen million, five hundred five thousand, two hundred seventy-four".