38158720 has 64 divisors (see below), whose sum is σ = 92228400. Its totient is φ = 15095808.

The previous prime is 38158699. The next prime is 38158721. The reversal of 38158720 is 2785183.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38158721) by changing a digit.

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, 69487 + ... + 70033.

Almost surely, 2^38158720 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 38158720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46114200).

38158720 is an abundant number, since it is smaller than the sum of its proper divisors (54069680).

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

38158720 is a wasteful number, since it uses less digits than its factorization.

38158720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 663 counting only the distinct ones).

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

The square root of 38158720 is about 6177.2744798981. The cubic root of 38158720 is about 336.6649718352.

The spelling of 38158720 in words is "thirty-eight million, one hundred fifty-eight thousand, seven hundred twenty".