16613940 has 72 divisors (see below), whose sum is σ = 54123552. Its totient is φ = 3796800.

The previous prime is 16613911. The next prime is 16613951. The reversal of 16613940 is 4931661.

16613940 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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 16613898 and 16613907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115 + ... + 5765.

It is an arithmetic number, because the mean of its divisors is an integer number (751716).

Almost surely, 2^16613940 is an apocalyptic number.

16613940 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 16613940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27061776).

16613940 is an abundant number, since it is smaller than the sum of its proper divisors (37509612).

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

16613940 is a wasteful number, since it uses less digits than its factorization.

16613940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5677 (or 5668 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16613940 is about 4076.0201177129. The cubic root of 16613940 is about 255.1668266285.

The spelling of 16613940 in words is "sixteen million, six hundred thirteen thousand, nine hundred forty".