16164540 has 72 divisors (see below), whose sum is σ = 56041440. Its totient is φ = 3694464.

The previous prime is 16164527. The next prime is 16164553. The reversal of 16164540 is 4546161.

16164540 is a `hidden beast` number, since 1 + 61 + 64 + 540 = 666.

It is an interprime number because it is at equal distance from previous prime (16164527) and next prime (16164553).

It is a super-2 number, since 2×16164540² = 522584706823200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5155 + ... + 7674.

Almost surely, 2^16164540 is an apocalyptic number.

16164540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16164540 is an abundant number, since it is smaller than the sum of its proper divisors (39876900).

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

16164540 is a wasteful number, since it uses less digits than its factorization.

16164540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12851 (or 12846 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16164540 is about 4020.5148923987. The cubic root of 16164540 is about 252.8450466847.

The spelling of 16164540 in words is "sixteen million, one hundred sixty-four thousand, five hundred forty".