16187140 has 12 divisors (see below), whose sum is σ = 33993036. Its totient is φ = 6474848.

The previous prime is 16187131. The next prime is 16187153. The reversal of 16187140 is 4178161.

It can be written as a sum of positive squares in 2 ways, for example, as 12446784 + 3740356 = 3528^2 + 1934^2 .

It is a super-3 number, since 3×16187140³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16187099 and 16187108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404659 + ... + 404698.

It is an arithmetic number, because the mean of its divisors is an integer number (2832753).

Almost surely, 2^16187140 is an apocalyptic number.

16187140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16187140 is an abundant number, since it is smaller than the sum of its proper divisors (17805896).

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

16187140 is a wasteful number, since it uses less digits than its factorization.

16187140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809366 (or 809364 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 16187140 is about 4023.3244959859. The cubic root of 16187140 is about 252.9628278903.

The spelling of 16187140 in words is "sixteen million, one hundred eighty-seven thousand, one hundred forty".