17980380 has 120 divisors (see below), whose sum is σ = 61593840. Its totient is φ = 4354560.

The previous prime is 17980379. The next prime is 17980381. The reversal of 17980380 is 8308971.

It is an interprime number because it is at equal distance from previous prime (17980379) and next prime (17980381).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17980381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17316 + ... + 18324.

It is an arithmetic number, because the mean of its divisors is an integer number (513282).

Almost surely, 2^17980380 is an apocalyptic number.

17980380 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 17980380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30796920).

17980380 is an abundant number, since it is smaller than the sum of its proper divisors (43613460).

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

17980380 is a wasteful number, since it uses less digits than its factorization.

17980380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 17980380 is about 4240.3278175160. The cubic root of 17980380 is about 261.9788845326.

The spelling of 17980380 in words is "seventeen million, nine hundred eighty thousand, three hundred eighty".