38897560 has 128 divisors (see below), whose sum is σ = 103219200. Its totient is φ = 13063680.

The previous prime is 38897557. The next prime is 38897567. The reversal of 38897560 is 6579883.

It is a self number, because there is not a number n which added to its sum of digits gives 38897560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38897567) 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 31 ways as a sum of consecutive naturals, for example, 306217 + ... + 306343.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^38897560 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 38897560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51609600).

38897560 is an abundant number, since it is smaller than the sum of its proper divisors (64321640).

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

38897560 is a wasteful number, since it uses less digits than its factorization.

38897560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 38897560 is about 6236.7908414504. The cubic root of 38897560 is about 338.8239645501.

It can be divided in two parts, 3889 and 7560, that added together give a square (11449 = 107²).

The spelling of 38897560 in words is "thirty-eight million, eight hundred ninety-seven thousand, five hundred sixty".