16140249 has 16 divisors (see below), whose sum is σ = 24364800. Its totient is φ = 10556208.

The previous prime is 16140247. The next prime is 16140277. The reversal of 16140249 is 94204161.

16140249 is a `hidden beast` number, since 1 + 614 + 0 + 2 + 49 = 666.

It is not a de Polignac number, because 16140249 - 2¹ = 16140247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16140247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4209 + ... + 7070.

It is an arithmetic number, because the mean of its divisors is an integer number (1522800).

Almost surely, 2^16140249 is an apocalyptic number.

It is an amenable number.

16140249 is a deficient number, since it is larger than the sum of its proper divisors (8224551).

16140249 is a wasteful number, since it uses less digits than its factorization.

16140249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11341 (or 11335 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 16140249 is about 4017.4928749159. The cubic root of 16140249 is about 252.7183302605.

The spelling of 16140249 in words is "sixteen million, one hundred forty thousand, two hundred forty-nine".