3812240 has 20 divisors (see below), whose sum is σ = 8863644. Its totient is φ = 1524864.

The previous prime is 3812219. The next prime is 3812257. The reversal of 3812240 is 422183.

It can be written as a sum of positive squares in 2 ways, for example, as 1290496 + 2521744 = 1136^2 + 1588^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (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, 23747 + ... + 23906.

Almost surely, 2^3812240 is an apocalyptic number.

It is an amenable number.

3812240 is an abundant number, since it is smaller than the sum of its proper divisors (5051404).

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

3812240 is a wasteful number, since it uses less digits than its factorization.

3812240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47666 (or 47660 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 3812240 is about 1952.4958386639. The cubic root of 3812240 is about 156.2164429270.

The spelling of 3812240 in words is "three million, eight hundred twelve thousand, two hundred forty".