2638237 has 4 divisors (see below), whose sum is σ = 3015136. Its totient is φ = 2261340.

The previous prime is 2638231. The next prime is 2638243. The reversal of 2638237 is 7328362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2638231) and next prime (2638243).

It is a cyclic number.

It is not a de Polignac number, because 2638237 - 2¹⁹ = 2113949 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6³ + 3¹¹ + 8⁵ + 2¹³ + 3¹³ + 7⁷ .

It is a Duffinian number.

2638237 is a lucky number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 2638199 and 2638208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188439 + ... + 188452.

It is an arithmetic number, because the mean of its divisors is an integer number (753784).

2^2638237 is an apocalyptic number.

It is an amenable number.

2638237 is a deficient number, since it is larger than the sum of its proper divisors (376899).

2638237 is an equidigital number, since it uses as much as digits as its factorization.

2638237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376898.

The product of its digits is 12096, while the sum is 31.

The square root of 2638237 is about 1624.2650645754. The cubic root of 2638237 is about 138.1776924055.

The spelling of 2638237 in words is "two million, six hundred thirty-eight thousand, two hundred thirty-seven".