38897520 has 160 divisors (see below), whose sum is σ = 127491840. Its totient is φ = 9799680.

The previous prime is 38897519. The next prime is 38897527. The reversal of 38897520 is 2579883.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38897527) 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, 580527 + ... + 580593.

It is an arithmetic number, because the mean of its divisors is an integer number (796824).

Almost surely, 2^38897520 is an apocalyptic number.

38897520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38897520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63745920).

38897520 is an abundant number, since it is smaller than the sum of its proper divisors (88594320).

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

38897520 is a wasteful number, since it uses less digits than its factorization.

38897520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 38897520 is about 6236.7876346722. The cubic root of 38897520 is about 338.8238484077.

The spelling of 38897520 in words is "thirty-eight million, eight hundred ninety-seven thousand, five hundred twenty".