16706440 has 32 divisors (see below), whose sum is σ = 38232000. Its totient is φ = 6568384.

The previous prime is 16706419. The next prime is 16706447. The reversal of 16706440 is 4460761.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16706399 and 16706408.

It is not an unprimeable number, because it can be changed into a prime (16706447) 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, 1180 + ... + 5899.

It is an arithmetic number, because the mean of its divisors is an integer number (1194750).

Almost surely, 2^16706440 is an apocalyptic number.

16706440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16706440 is an abundant number, since it is smaller than the sum of its proper divisors (21525560).

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

16706440 is a wasteful number, since it uses less digits than its factorization.

16706440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7149 (or 7145 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 16706440 is about 4087.3512205339. The cubic root of 16706440 is about 255.6395072499.

The spelling of 16706440 in words is "sixteen million, seven hundred six thousand, four hundred forty".