16163940 has 192 divisors, whose sum is σ = 54867456. Its totient is φ = 3514368.

The previous prime is 16163929. The next prime is 16163969. The reversal of 16163940 is 4936161.

16163940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16163940² = 522545912647200, which contains 22 as substring.

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 = 16163898 and 16163907.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 304954 + ... + 305006.

It is an arithmetic number, because the mean of its divisors is an integer number (285768).

Almost surely, 2^16163940 is an apocalyptic number.

16163940 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 16163940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27433728).

16163940 is an abundant number, since it is smaller than the sum of its proper divisors (38703516).

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

16163940 is a wasteful number, since it uses less digits than its factorization.

16163940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 116 counting only the distinct ones).

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

The square root of 16163940 is about 4020.4402743978. The cubic root of 16163940 is about 252.8419182545.

The spelling of 16163940 in words is "sixteen million, one hundred sixty-three thousand, nine hundred forty".