2638255 has 8 divisors (see below), whose sum is σ = 3268224. Its totient is φ = 2042400.

The previous prime is 2638253. The next prime is 2638267. The reversal of 2638255 is 5528362.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2638255 - 2¹ = 2638253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a d-powerful number, because it can be written as 2¹³ + 6⁵ + 3² + 8⁶ + 2¹⁴ + 5⁸ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638253) 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, 8356 + ... + 8665.

It is an arithmetic number, because the mean of its divisors is an integer number (408528).

2^2638255 is an apocalyptic number.

2638255 is a deficient number, since it is larger than the sum of its proper divisors (629969).

2638255 is a wasteful number, since it uses less digits than its factorization.

2638255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17057.

The product of its digits is 14400, while the sum is 31.

The square root of 2638255 is about 1624.2706055334. The cubic root of 2638255 is about 138.1780066548.

The spelling of 2638255 in words is "two million, six hundred thirty-eight thousand, two hundred fifty-five".