16941640 has 16 divisors (see below), whose sum is σ = 38118780. Its totient is φ = 6776640.

The previous prime is 16941637. The next prime is 16941643. The reversal of 16941640 is 4614961.

It is an interprime number because it is at equal distance from previous prime (16941637) and next prime (16941643).

It can be written as a sum of positive squares in 2 ways, for example, as 15256836 + 1684804 = 3906^2 + 1298^2 .

It is not an unprimeable number, because it can be changed into a prime (16941643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211731 + ... + 211810.

Almost surely, 2^16941640 is an apocalyptic number.

16941640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16941640 is an abundant number, since it is smaller than the sum of its proper divisors (21177140).

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

16941640 is a wasteful number, since it uses less digits than its factorization.

16941640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423552 (or 423548 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 16941640 is about 4116.0223517372. The cubic root of 16941640 is about 256.8335864431.

The spelling of 16941640 in words is "sixteen million, nine hundred forty-one thousand, six hundred forty".