16097640 has 128 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 3723264.

The previous prime is 16097633. The next prime is 16097651. The reversal of 16097640 is 4679061.

It is a happy number.

16097640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26217 + ... + 26823.

It is an arithmetic number, because the mean of its divisors is an integer number (430920).

Almost surely, 2^16097640 is an apocalyptic number.

16097640 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 16097640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27578880).

16097640 is an abundant number, since it is smaller than the sum of its proper divisors (39060120).

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

16097640 is a wasteful number, since it uses less digits than its factorization.

16097640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 16097640 is about 4012.1864363461. The cubic root of 16097640 is about 252.4957487112.

The spelling of 16097640 in words is "sixteen million, ninety-seven thousand, six hundred forty".