38690718 has 48 divisors (see below), whose sum is σ = 85896720. Its totient is φ = 11608960.

The previous prime is 38690713. The next prime is 38690731. The reversal of 38690718 is 81709683.

It is a self number, because there is not a number n which added to its sum of digits gives 38690718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38690711) 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, 99268 + ... + 99656.

It is an arithmetic number, because the mean of its divisors is an integer number (1789515).

Almost surely, 2^38690718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38690718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42948360).

38690718 is an abundant number, since it is smaller than the sum of its proper divisors (47206002).

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

38690718 is a wasteful number, since it uses less digits than its factorization.

38690718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 38690718 is about 6220.1863316142. The cubic root of 38690718 is about 338.2223191043. Note that the first 3 decimals are identical.

The spelling of 38690718 in words is "thirty-eight million, six hundred ninety thousand, seven hundred eighteen".