17980420 has 24 divisors (see below), whose sum is σ = 37856448. Its totient is φ = 7173600.

The previous prime is 17980381. The next prime is 17980423. The reversal of 17980420 is 2408971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17980423) 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, 8905 + ... + 10735.

It is an arithmetic number, because the mean of its divisors is an integer number (1577352).

Almost surely, 2^17980420 is an apocalyptic number.

17980420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17980420 is an abundant number, since it is smaller than the sum of its proper divisors (19876028).

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

17980420 is a wasteful number, since it uses less digits than its factorization.

17980420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2329 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 17980420 is about 4240.3325341298. The cubic root of 17980420 is about 261.9790788026.

The spelling of 17980420 in words is "seventeen million, nine hundred eighty thousand, four hundred twenty".