7868388 has 36 divisors (see below), whose sum is σ = 20184080. Its totient is φ = 2383920.

The previous prime is 7868381. The next prime is 7868423. The reversal of 7868388 is 8838687.

It is not an unprimeable number, because it can be changed into a prime (7868381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1258 + ... + 4161.

Almost surely, 2^7868388 is an apocalyptic number.

It is an amenable number.

7868388 is an abundant number, since it is smaller than the sum of its proper divisors (12315692).

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

7868388 is a wasteful number, since it uses less digits than its factorization.

7868388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448 (or 5435 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 7868388 is about 2805.0647051361. The cubic root of 7868388 is about 198.8971632667.

Subtracting 7868388 from its reverse (8838687), we obtain a cube (970299 = 99³).

It can be divided in two parts, 7868 and 388, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 7868388 in words is "seven million, eight hundred sixty-eight thousand, three hundred eighty-eight".