2387638 has 8 divisors (see below), whose sum is σ = 3907080. Its totient is φ = 1085280.

The previous prime is 2387629. The next prime is 2387687. The reversal of 2387638 is 8367832.

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

It is a super-3 number, since 3×2387638³ = 40834449143903334216, which contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2387597 and 2387606.

It is a congruent number.

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, 54243 + ... + 54286.

It is an arithmetic number, because the mean of its divisors is an integer number (488385).

2^2387638 is an apocalyptic number.

2387638 is a deficient number, since it is larger than the sum of its proper divisors (1519442).

2387638 is a wasteful number, since it uses less digits than its factorization.

2387638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108542.

The product of its digits is 48384, while the sum is 37.

The square root of 2387638 is about 1545.1983691423. The cubic root of 2387638 is about 133.6563183622.

It can be divided in two parts, 2387 and 638, that added together give a square (3025 = 55²).

The spelling of 2387638 in words is "two million, three hundred eighty-seven thousand, six hundred thirty-eight".