3720880 has 20 divisors (see below), whose sum is σ = 8651232. Its totient is φ = 1488320.

The previous prime is 3720877. The next prime is 3720887. The reversal of 3720880 is 880273.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (3720887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23176 + ... + 23335.

Almost surely, 2^3720880 is an apocalyptic number.

It is an amenable number.

3720880 is an abundant number, since it is smaller than the sum of its proper divisors (4930352).

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

3720880 is a wasteful number, since it uses less digits than its factorization.

3720880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46524 (or 46518 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 3720880 is about 1928.9582680815. The cubic root of 3720880 is about 154.9584349180.

The spelling of 3720880 in words is "three million, seven hundred twenty thousand, eight hundred eighty".