38620218 has 48 divisors (see below), whose sum is σ = 95605056. Its totient is φ = 10183680.

The previous prime is 38620201. The next prime is 38620223. The reversal of 38620218 is 81202683.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4378 + ... + 9818.

It is an arithmetic number, because the mean of its divisors is an integer number (1991772).

Almost surely, 2^38620218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38620218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47802528).

38620218 is an abundant number, since it is smaller than the sum of its proper divisors (56984838).

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

38620218 is a wasteful number, since it uses less digits than its factorization.

38620218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479 (or 5466 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 38620218 is about 6214.5167149184. The cubic root of 38620218 is about 338.0167644545.

The spelling of 38620218 in words is "thirty-eight million, six hundred twenty thousand, two hundred eighteen".