3720280 has 32 divisors (see below), whose sum is σ = 8864640. Its totient is φ = 1400320.

The previous prime is 3720253. The next prime is 3720293. The reversal of 3720280 is 820273.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056 + ... + 3415.

It is an arithmetic number, because the mean of its divisors is an integer number (277020).

Almost surely, 2^3720280 is an apocalyptic number.

It is an amenable number.

3720280 is an abundant number, since it is smaller than the sum of its proper divisors (5144360).

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

3720280 is a wasteful number, since it uses less digits than its factorization.

3720280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5499 (or 5495 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 3720280 is about 1928.8027374514. The cubic root of 3720280 is about 154.9501053419.

The spelling of 3720280 in words is "three million, seven hundred twenty thousand, two hundred eighty".