16670988 has 48 divisors (see below), whose sum is σ = 43532160. Its totient is φ = 5517072.

The previous prime is 16670987. The next prime is 16670989. The reversal of 16670988 is 88907661.

It is a happy number.

16670988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16670987) and next prime (16670989).

It is a super-2 number, since 2×16670988² = 555843681792288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16670987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17131 + ... + 18077.

It is an arithmetic number, because the mean of its divisors is an integer number (906920).

Almost surely, 2^16670988 is an apocalyptic number.

16670988 is a gapful number since it is divisible by the number (18) 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 16670988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21766080).

16670988 is an abundant number, since it is smaller than the sum of its proper divisors (26861172).

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

16670988 is a wasteful number, since it uses less digits than its factorization.

16670988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 16670988 is about 4083.0121234206. The cubic root of 16670988 is about 255.4585520801.

The spelling of 16670988 in words is "sixteen million, six hundred seventy thousand, nine hundred eighty-eight".