16709490 has 120 divisors (see below), whose sum is σ = 52389612. Its totient is φ = 3810240.

The previous prime is 16709461. The next prime is 16709491. The reversal of 16709490 is 9490761.

16709490 is a `hidden beast` number, since 167 + 0 + 9 + 490 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13816089 + 2893401 = 3717^2 + 1701^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16709491) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 39480 + ... + 39900.

Almost surely, 2^16709490 is an apocalyptic number.

16709490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16709490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26194806).

16709490 is an abundant number, since it is smaller than the sum of its proper divisors (35680122).

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

16709490 is a wasteful number, since it uses less digits than its factorization.

16709490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 16709490 is about 4087.7243057721. The cubic root of 16709490 is about 255.6550631883.

The spelling of 16709490 in words is "sixteen million, seven hundred nine thousand, four hundred ninety".