3815840 has 48 divisors (see below), whose sum is σ = 10305792. Its totient is φ = 1307904.

The previous prime is 3815813. The next prime is 3815843. The reversal of 3815840 is 485183.

It is not an unprimeable number, because it can be changed into a prime (3815843) 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, 584 + ... + 2823.

It is an arithmetic number, because the mean of its divisors is an integer number (214704).

Almost surely, 2^3815840 is an apocalyptic number.

It is an amenable number.

3815840 is an abundant number, since it is smaller than the sum of its proper divisors (6489952).

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

3815840 is a wasteful number, since it uses less digits than its factorization.

3815840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429 (or 3421 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 3815840 is about 1953.4175180949. The cubic root of 3815840 is about 156.2656005757.

The spelling of 3815840 in words is "three million, eight hundred fifteen thousand, eight hundred forty".