2638888 has 16 divisors (see below), whose sum is σ = 5654880. Its totient is φ = 1130928.

The previous prime is 2638879. The next prime is 2638897. The reversal of 2638888 is 8888362.

It is an interprime number because it is at equal distance from previous prime (2638879) and next prime (2638897).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23506 + ... + 23617.

It is an arithmetic number, because the mean of its divisors is an integer number (353430).

2^2638888 is an apocalyptic number.

2638888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2638888 is an abundant number, since it is smaller than the sum of its proper divisors (3015992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2638888 is a wasteful number, since it uses less digits than its factorization.

2638888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47136 (or 47132 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 2638888 is about 1624.4654505406. The cubic root of 2638888 is about 138.1890568482.

The spelling of 2638888 in words is "two million, six hundred thirty-eight thousand, eight hundred eighty-eight".