3815238 has 48 divisors (see below), whose sum is σ = 9357120. Its totient is φ = 1031184.

The previous prime is 3815221. The next prime is 3815243. The reversal of 3815238 is 8325183.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5245 + ... + 5927.

It is an arithmetic number, because the mean of its divisors is an integer number (194940).

Almost surely, 2^3815238 is an apocalyptic number.

3815238 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3815238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4678560).

3815238 is an abundant number, since it is smaller than the sum of its proper divisors (5541882).

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

3815238 is a wasteful number, since it uses less digits than its factorization.

3815238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 714 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 3815238 is about 1953.2634230948. The cubic root of 3815238 is about 156.2573824779.

The spelling of 3815238 in words is "three million, eight hundred fifteen thousand, two hundred thirty-eight".