16387120 has 40 divisors (see below), whose sum is σ = 40109040. Its totient is φ = 6209280.

The previous prime is 16387103. The next prime is 16387121. The reversal of 16387120 is 2178361.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (16387121) 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, 3871 + ... + 6910.

It is an arithmetic number, because the mean of its divisors is an integer number (1002726).

Almost surely, 2^16387120 is an apocalyptic number.

16387120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16387120 is an abundant number, since it is smaller than the sum of its proper divisors (23721920).

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

16387120 is a wasteful number, since it uses less digits than its factorization.

16387120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10813 (or 10807 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 16387120 is about 4048.1007892591. The cubic root of 16387120 is about 254.0002893336. Note that the first 3 decimals are identical.

The spelling of 16387120 in words is "sixteen million, three hundred eighty-seven thousand, one hundred twenty".