38157280 has 144 divisors (see below), whose sum is σ = 108936576. Its totient is φ = 12579840.

The previous prime is 38157257. The next prime is 38157281. The reversal of 38157280 is 8275183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38157281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242962 + ... + 243118.

It is an arithmetic number, because the mean of its divisors is an integer number (756504).

Almost surely, 2^38157280 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 38157280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54468288).

38157280 is an abundant number, since it is smaller than the sum of its proper divisors (70779296).

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

38157280 is a wasteful number, since it uses less digits than its factorization.

38157280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 38157280 is about 6177.1579225401. The cubic root of 38157280 is about 336.6607368603.

The spelling of 38157280 in words is "thirty-eight million, one hundred fifty-seven thousand, two hundred eighty".