16297140 has 24 divisors (see below), whose sum is σ = 45632160. Its totient is φ = 4345888.

The previous prime is 16297139. The next prime is 16297153. The reversal of 16297140 is 4179261.

It is a happy number.

It is a super-3 number, since 3×16297140³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16297098 and 16297107.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 135750 + ... + 135869.

It is an arithmetic number, because the mean of its divisors is an integer number (1901340).

Almost surely, 2^16297140 is an apocalyptic number.

16297140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16297140 is an abundant number, since it is smaller than the sum of its proper divisors (29335020).

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

16297140 is a wasteful number, since it uses less digits than its factorization.

16297140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271631 (or 271629 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 16297140 is about 4036.9716372548. The cubic root of 16297140 is about 253.5345392913.

The spelling of 16297140 in words is "sixteen million, two hundred ninety-seven thousand, one hundred forty".