2638215 has 24 divisors (see below), whose sum is σ = 4773600. Its totient is φ = 1345344.

The previous prime is 2638201. The next prime is 2638231. The reversal of 2638215 is 5128362.

2638215 is a `hidden beast` number, since 2 + 638 + 21 + 5 = 666.

It is not a de Polignac number, because 2638215 - 2⁴ = 2638199 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 6⁴ + 3¹² + 8 + 2²¹ + 1 + 5³ .

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, 240 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (198900).

2^2638215 is an apocalyptic number.

2638215 is a deficient number, since it is larger than the sum of its proper divisors (2135385).

2638215 is a wasteful number, since it uses less digits than its factorization.

2638215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583 (or 2580 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2638215 is about 1624.2582922676. The cubic root of 2638215 is about 138.1773083210.

The spelling of 2638215 in words is "two million, six hundred thirty-eight thousand, two hundred fifteen".