16616040 has 128 divisors (see below), whose sum is σ = 57784320. Its totient is φ = 3744000.

The previous prime is 16616027. The next prime is 16616053. The reversal of 16616040 is 4061661.

It is an interprime number because it is at equal distance from previous prime (16616027) and next prime (16616053).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16616040.

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 31 ways as a sum of consecutive naturals, for example, 109965 + ... + 110115.

It is an arithmetic number, because the mean of its divisors is an integer number (451440).

Almost surely, 2^16616040 is an apocalyptic number.

16616040 is a gapful number since it is divisible by the number (10) 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 16616040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28892160).

16616040 is an abundant number, since it is smaller than the sum of its proper divisors (41168280).

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

16616040 is a wasteful number, since it uses less digits than its factorization.

16616040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16616040 is about 4076.2777137972. The cubic root of 16616040 is about 255.1775771942.

The spelling of 16616040 in words is "sixteen million, six hundred sixteen thousand, forty".