38782818 has 48 divisors (see below), whose sum is σ = 87104160. Its totient is φ = 12462912.

The previous prime is 38782811. The next prime is 38782841. The reversal of 38782818 is 81828783.

It is a happy number.

It is a super-2 number, since 2×38782818² = 3008213944042248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38782811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68605 + ... + 69167.

It is an arithmetic number, because the mean of its divisors is an integer number (1814670).

Almost surely, 2^38782818 is an apocalyptic number.

38782818 is an abundant number, since it is smaller than the sum of its proper divisors (48321342).

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

38782818 is a wasteful number, since it uses less digits than its factorization.

38782818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 700 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 38782818 is about 6227.5852463053. The cubic root of 38782818 is about 338.4904763693.

The spelling of 38782818 in words is "thirty-eight million, seven hundred eighty-two thousand, eight hundred eighteen".