16327940 has 24 divisors (see below), whose sum is σ = 34677720. Its totient is φ = 6457088.

The previous prime is 16327903. The next prime is 16327943. The reversal of 16327940 is 4972361.

16327940 = T₁₆ + T₁₇ + ... + T₄₆₀.

It can be written as a sum of positive squares in 4 ways, for example, as 391876 + 15936064 = 626^2 + 3992^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16327897 and 16327906.

It is not an unprimeable number, because it can be changed into a prime (16327943) 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, 2807 + ... + 6366.

It is an arithmetic number, because the mean of its divisors is an integer number (1444905).

Almost surely, 2^16327940 is an apocalyptic number.

16327940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16327940 is an abundant number, since it is smaller than the sum of its proper divisors (18349780).

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

16327940 is a wasteful number, since it uses less digits than its factorization.

16327940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9271 (or 9269 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 16327940 is about 4040.7845772820. The cubic root of 16327940 is about 253.6941572700.

The spelling of 16327940 in words is "sixteen million, three hundred twenty-seven thousand, nine hundred forty".