16016640 has 144 divisors (see below), whose sum is σ = 52882368. Its totient is φ = 4128768.

The previous prime is 16016633. The next prime is 16016647. The reversal of 16016640 is 4661061.

It is an interprime number because it is at equal distance from previous prime (16016633) and next prime (16016647).

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 16016640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16016647) 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, 165072 + ... + 165168.

Almost surely, 2^16016640 is an apocalyptic number.

16016640 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 16016640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26441184).

16016640 is an abundant number, since it is smaller than the sum of its proper divisors (36865728).

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

16016640 is an equidigital number, since it uses as much as digits as its factorization.

16016640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 150 counting only the distinct ones).

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

The square root of 16016640 is about 4002.0794594810. The cubic root of 16016640 is about 252.0715342397.

The spelling of 16016640 in words is "sixteen million, sixteen thousand, six hundred forty".