38805280 has 24 divisors (see below), whose sum is σ = 91677852. Its totient is φ = 15522048.

The previous prime is 38805223. The next prime is 38805281. The reversal of 38805280 is 8250883.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36626704 + 2178576 = 6052^2 + 1476^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (38805281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121107 + ... + 121426.

Almost surely, 2^38805280 is an apocalyptic number.

It is an amenable number.

38805280 is an abundant number, since it is smaller than the sum of its proper divisors (52872572).

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

38805280 is a wasteful number, since it uses less digits than its factorization.

38805280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242548 (or 242540 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 38805280 is about 6229.3884129985. The cubic root of 38805280 is about 338.5558120522. Note that the first 3 decimals are identical.

The spelling of 38805280 in words is "thirty-eight million, eight hundred five thousand, two hundred eighty".