16818740 has 24 divisors (see below), whose sum is σ = 36460032. Its totient is φ = 6510240.

The previous prime is 16818731. The next prime is 16818749. The reversal of 16818740 is 4781861.

It is an interprime number because it is at equal distance from previous prime (16818731) and next prime (16818749).

It is a self number, because there is not a number n which added to its sum of digits gives 16818740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16818749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12944 + ... + 14183.

It is an arithmetic number, because the mean of its divisors is an integer number (1519168).

Almost surely, 2^16818740 is an apocalyptic number.

16818740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16818740 is an abundant number, since it is smaller than the sum of its proper divisors (19641292).

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

16818740 is a wasteful number, since it uses less digits than its factorization.

16818740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27167 (or 27165 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 16818740 is about 4101.0657151526. The cubic root of 16818740 is about 256.2110279816.

The spelling of 16818740 in words is "sixteen million, eight hundred eighteen thousand, seven hundred forty".