16949040 has 40 divisors (see below), whose sum is σ = 52542768. Its totient is φ = 4519680.

The previous prime is 16949011. The next prime is 16949047. The reversal of 16949040 is 4094961.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 16948992 and 16949010.

It is not an unprimeable number, because it can be changed into a prime (16949047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35071 + ... + 35550.

Almost surely, 2^16949040 is an apocalyptic number.

16949040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16949040 is an abundant number, since it is smaller than the sum of its proper divisors (35593728).

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

16949040 is a wasteful number, since it uses less digits than its factorization.

16949040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70637 (or 70631 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 16949040 is about 4116.9211797167. The cubic root of 16949040 is about 256.8709754225.

The spelling of 16949040 in words is "sixteen million, nine hundred forty-nine thousand, forty".