16099240 has 32 divisors (see below), whose sum is σ = 36379080. Its totient is φ = 6412032.

The previous prime is 16099231. The next prime is 16099247. The reversal of 16099240 is 4299061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14424804 + 1674436 = 3798^2 + 1294^2 .

It is not an unprimeable number, because it can be changed into a prime (16099247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10354 + ... + 11806.

Almost surely, 2^16099240 is an apocalyptic number.

16099240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16099240 is an abundant number, since it is smaller than the sum of its proper divisors (20279840).

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

16099240 is a wasteful number, since it uses less digits than its factorization.

16099240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 16099240 is about 4012.3858239207. The cubic root of 16099240 is about 252.5041139087.

The spelling of 16099240 in words is "sixteen million, ninety-nine thousand, two hundred forty".