3180280 has 32 divisors (see below), whose sum is σ = 7326000. Its totient is φ = 1242528.

The previous prime is 3180271. The next prime is 3180283. The reversal of 3180280 is 820813.

It is a super-2 number, since 2×3180280² = 20228361756800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3180283) 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, 73939 + ... + 73981.

Almost surely, 2^3180280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3180280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3663000).

3180280 is an abundant number, since it is smaller than the sum of its proper divisors (4145720).

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

3180280 is an frugal number, since it uses more digits than its factorization.

3180280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 3180280 is about 1783.3339563862. Note that the first 3 decimals coincide. The cubic root of 3180280 is about 147.0579314142.

The spelling of 3180280 in words is "three million, one hundred eighty thousand, two hundred eighty".