16127640 has 128 divisors (see below), whose sum is σ = 54648000. Its totient is φ = 4230144.

The previous prime is 16127633. The next prime is 16127641. The reversal of 16127640 is 4672161.

16127640 is a `hidden beast` number, since 1 + 6 + 12 + 7 + 640 = 666.

16127640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16127641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117652 + ... + 117788.

Almost surely, 2^16127640 is an apocalyptic number.

16127640 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 16127640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27324000).

16127640 is an abundant number, since it is smaller than the sum of its proper divisors (38520360).

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

16127640 is a wasteful number, since it uses less digits than its factorization.

16127640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 16127640 is about 4015.9233060406. The cubic root of 16127640 is about 252.6525040233.

The spelling of 16127640 in words is "sixteen million, one hundred twenty-seven thousand, six hundred forty".