8438380 has 36 divisors (see below), whose sum is σ = 18200448. Its totient is φ = 3286240.

The previous prime is 8438377. The next prime is 8438387. The reversal of 8438380 is 838348.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8438387) 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, 44085 + ... + 44275.

It is an arithmetic number, because the mean of its divisors is an integer number (505568).

Almost surely, 2^8438380 is an apocalyptic number.

It is an amenable number.

8438380 is an abundant number, since it is smaller than the sum of its proper divisors (9762068).

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

8438380 is a wasteful number, since it uses less digits than its factorization.

8438380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8438380 is about 2904.8889823881. Note that the first 3 decimals coincide. The cubic root of 8438380 is about 203.5883985912.

The spelling of 8438380 in words is "eight million, four hundred thirty-eight thousand, three hundred eighty".