16749012 has 96 divisors (see below), whose sum is σ = 48722688. Its totient is φ = 4368384.

The previous prime is 16749011. The next prime is 16749017. The reversal of 16749012 is 21094761.

It is a happy number.

It is a super-2 number, since 2×16749012² = 561058805952288, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16749011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52678 + ... + 52994.

It is an arithmetic number, because the mean of its divisors is an integer number (507528).

Almost surely, 2^16749012 is an apocalyptic number.

16749012 is a gapful number since it is divisible by the number (12) 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 16749012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24361344).

16749012 is an abundant number, since it is smaller than the sum of its proper divisors (31973676).

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

16749012 is a wasteful number, since it uses less digits than its factorization.

16749012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 383 counting only the distinct ones).

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

The square root of 16749012 is about 4092.5556807452. Note that the first 3 decimals coincide. The cubic root of 16749012 is about 255.8564665768.

The spelling of 16749012 in words is "sixteen million, seven hundred forty-nine thousand, twelve".