38699520 has 80 divisors (see below), whose sum is σ = 123742080. Its totient is φ = 10317824.

The previous prime is 38699513. The next prime is 38699533. The reversal of 38699520 is 2599683.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5161 + ... + 10199.

It is an arithmetic number, because the mean of its divisors is an integer number (1546776).

Almost surely, 2^38699520 is an apocalyptic number.

38699520 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 38699520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61871040).

38699520 is an abundant number, since it is smaller than the sum of its proper divisors (85042560).

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

38699520 is an equidigital number, since it uses as much as digits as its factorization.

38699520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065 (or 5049 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 38699520 is about 6220.8938264529. The cubic root of 38699520 is about 338.2479652824.

The spelling of 38699520 in words is "thirty-eight million, six hundred ninety-nine thousand, five hundred twenty".