3867280 has 20 divisors (see below), whose sum is σ = 8991612. Its totient is φ = 1546880.

The previous prime is 3867271. The next prime is 3867323. The reversal of 3867280 is 827683.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2359296 + 1507984 = 1536^2 + 1228^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24091 + ... + 24250.

Almost surely, 2^3867280 is an apocalyptic number.

It is an amenable number.

3867280 is an abundant number, since it is smaller than the sum of its proper divisors (5124332).

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

3867280 is a wasteful number, since it uses less digits than its factorization.

3867280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48354 (or 48348 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 3867280 is about 1966.5401089223. The cubic root of 3867280 is about 156.9646559248.

The spelling of 3867280 in words is "three million, eight hundred sixty-seven thousand, two hundred eighty".