17980542 has 24 divisors (see below), whose sum is σ = 40401816. Its totient is φ = 5993352.

The previous prime is 17980519. The next prime is 17980553. The reversal of 17980542 is 24508971.

It is a super-2 number, since 2×17980542² = 646599781227528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17980497 and 17980506.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 18013 + ... + 18984.

It is an arithmetic number, because the mean of its divisors is an integer number (1683409).

Almost surely, 2^17980542 is an apocalyptic number.

17980542 is an abundant number, since it is smaller than the sum of its proper divisors (22421274).

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

17980542 is an equidigital number, since it uses as much as digits as its factorization.

17980542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37014 (or 37002 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 17980542 is about 4240.3469197697. The cubic root of 17980542 is about 261.9796713245.

The spelling of 17980542 in words is "seventeen million, nine hundred eighty thousand, five hundred forty-two".