38638280 has 32 divisors (see below), whose sum is σ = 92051640. Its totient is φ = 14545920.

The previous prime is 38638279. The next prime is 38638283. The reversal of 38638280 is 8283683.

It can be written as a sum of positive squares in 4 ways, for example, as 33339076 + 5299204 = 5774^2 + 2302^2 .

It is not an unprimeable number, because it can be changed into a prime (38638283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27731 + ... + 29090.

Almost surely, 2^38638280 is an apocalyptic number.

It is an amenable number.

38638280 is an abundant number, since it is smaller than the sum of its proper divisors (53413360).

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

38638280 is a wasteful number, since it uses less digits than its factorization.

38638280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56849 (or 56845 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 38638280 is about 6215.9697553962. The cubic root of 38638280 is about 338.0694510833.

The spelling of 38638280 in words is "thirty-eight million, six hundred thirty-eight thousand, two hundred eighty".