16749144 has 48 divisors (see below), whose sum is σ = 45559800. Its totient is φ = 5558784.

The previous prime is 16749121. The next prime is 16749157. The reversal of 16749144 is 44194761.

16749144 is a `hidden beast` number, since 167 + 491 + 4 + 4 = 666.

It is a super-3 number, since 3×16749144³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16749099 and 16749108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25087 + ... + 25745.

Almost surely, 2^16749144 is an apocalyptic number.

It is an amenable number.

16749144 is an abundant number, since it is smaller than the sum of its proper divisors (28810656).

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

16749144 is a wasteful number, since it uses less digits than its factorization.

16749144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1017 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 16749144 is about 4092.5718075557. The cubic root of 16749144 is about 255.8571387153.

The spelling of 16749144 in words is "sixteen million, seven hundred forty-nine thousand, one hundred forty-four".