38440000 has 105 divisors (see below), whose sum is σ = 98492691. Its totient is φ = 14880000.

The previous prime is 38439997. The next prime is 38440013. The reversal of 38440000 is 4483.

The square root of 38440000 is 6200.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 3013696 + 35426304 = 1736^2 + 5952^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38440000.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1239985 + ... + 1240015.

Almost surely, 2^38440000 is an apocalyptic number.

38440000 is the 6200-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38440000

38440000 is an abundant number, since it is smaller than the sum of its proper divisors (60052691).

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

38440000 is an frugal number, since it uses more digits than its factorization.

38440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The cubic root of 38440000 is about 337.4901688952.

Adding to 38440000 its reverse (4483), we get a palindrome (38444483).

The spelling of 38440000 in words is "thirty-eight million, four hundred forty thousand".