16180640 has 48 divisors (see below), whose sum is σ = 43690752. Its totient is φ = 5547264.

The previous prime is 16180627. The next prime is 16180673. The reversal of 16180640 is 4608161.

It is a super-2 number, since 2×16180640² = 523626221619200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6104 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (910224).

Almost surely, 2^16180640 is an apocalyptic number.

16180640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16180640 is an abundant number, since it is smaller than the sum of its proper divisors (27510112).

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

16180640 is a wasteful number, since it uses less digits than its factorization.

16180640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14469 (or 14461 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 16180640 is about 4022.5166251987. The cubic root of 16180640 is about 252.9289640017.

The spelling of 16180640 in words is "sixteen million, one hundred eighty thousand, six hundred forty".