16099900 has 36 divisors (see below), whose sum is σ = 35232120. Its totient is φ = 6385600.

The previous prime is 16099891. The next prime is 16099903. The reversal of 16099900 is 999061.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16099903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12486 + ... + 13714.

It is an arithmetic number, because the mean of its divisors is an integer number (978670).

Almost surely, 2^16099900 is an apocalyptic number.

16099900 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 16099900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17616060).

16099900 is an abundant number, since it is smaller than the sum of its proper divisors (19132220).

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

16099900 is a wasteful number, since it uses less digits than its factorization.

16099900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 16099900 is about 4012.4680684088. The cubic root of 16099900 is about 252.5075643912.

The spelling of 16099900 in words is "sixteen million, ninety-nine thousand, nine hundred".