2815438 has 12 divisors (see below), whose sum is σ = 4487112. Its totient is φ = 1324640.

The previous prime is 2815427. The next prime is 2815447. The reversal of 2815438 is 8345182.

It is a super-2 number, since 2×2815438² = 15853382263688, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1858 + ... + 3013.

It is an arithmetic number, because the mean of its divisors is an integer number (373926).

2^2815438 is an apocalyptic number.

2815438 is a deficient number, since it is larger than the sum of its proper divisors (1671674).

2815438 is a wasteful number, since it uses less digits than its factorization.

2815438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907 (or 4890 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 2815438 is about 1677.9266968494. The cubic root of 2815438 is about 141.2045385846.

The spelling of 2815438 in words is "two million, eight hundred fifteen thousand, four hundred thirty-eight".