16749240 has 64 divisors (see below), whose sum is σ = 51991200. Its totient is φ = 4311552.

The previous prime is 16749191. The next prime is 16749247. The reversal of 16749240 is 4294761.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16749247) 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, 1074 + ... + 5886.

Almost surely, 2^16749240 is an apocalyptic number.

16749240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16749240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25995600).

16749240 is an abundant number, since it is smaller than the sum of its proper divisors (35241960).

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

16749240 is a wasteful number, since it uses less digits than its factorization.

16749240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856 (or 4852 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 16749240 is about 4092.5835361053. The cubic root of 16749240 is about 255.8576275410.

The spelling of 16749240 in words is "sixteen million, seven hundred forty-nine thousand, two hundred forty".