38847280 has 40 divisors (see below), whose sum is σ = 90954000. Its totient is φ = 15429888.

The previous prime is 38847271. The next prime is 38847283. The reversal of 38847280 is 8274883.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×38847280² = 3018222326796800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (38847283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10291 + ... + 13549.

It is an arithmetic number, because the mean of its divisors is an integer number (2273850).

Almost surely, 2^38847280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38847280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45477000).

38847280 is an abundant number, since it is smaller than the sum of its proper divisors (52106720).

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

38847280 is a wasteful number, since it uses less digits than its factorization.

38847280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421 (or 3415 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 38847280 is about 6232.7586187819. The cubic root of 38847280 is about 338.6779107047.

The spelling of 38847280 in words is "thirty-eight million, eight hundred forty-seven thousand, two hundred eighty".