2638366 has 16 divisors (see below), whose sum is σ = 4251744. Its totient is φ = 1223424.

The previous prime is 2638357. The next prime is 2638367. The reversal of 2638366 is 6638362.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a d-powerful number, because it can be written as 2¹³ + 6 + 3⁵ + 8⁷ + 3¹² + 6² + 6⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638367) 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, 1951 + ... + 3013.

It is an arithmetic number, because the mean of its divisors is an integer number (265734).

2^2638366 is an apocalyptic number.

2638366 is a deficient number, since it is larger than the sum of its proper divisors (1613378).

2638366 is a wasteful number, since it uses less digits than its factorization.

2638366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155.

The product of its digits is 31104, while the sum is 34.

The square root of 2638366 is about 1624.3047743573. The cubic root of 2638366 is about 138.1799444942.

The spelling of 2638366 in words is "two million, six hundred thirty-eight thousand, three hundred sixty-six".