16099440 has 180 divisors, whose sum is σ = 59668056. Its totient is φ = 3580416.

The previous prime is 16099423. The next prime is 16099451. The reversal of 16099440 is 4499061.

16099440 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

16099440 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 435102 + ... + 435138.

Almost surely, 2^16099440 is an apocalyptic number.

16099440 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 16099440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29834028).

16099440 is an abundant number, since it is smaller than the sum of its proper divisors (43568616).

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

16099440 is a wasteful number, since it uses less digits than its factorization.

16099440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 16099440 is about 4012.4107466709. The cubic root of 16099440 is about 252.5051595194.

The spelling of 16099440 in words is "sixteen million, ninety-nine thousand, four hundred forty".