38318720 has 64 divisors (see below), whose sum is σ = 99951840. Its totient is φ = 13931520.

The previous prime is 38318711. The next prime is 38318729. The reversal of 38318720 is 2781383.

It is an interprime number because it is at equal distance from previous prime (38318711) and next prime (38318729).

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

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38318729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4319 + ... + 9761.

Almost surely, 2^38318720 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 38318720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49975920).

38318720 is an abundant number, since it is smaller than the sum of its proper divisors (61633120).

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

38318720 is a wasteful number, since it uses less digits than its factorization.

38318720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473 (or 5461 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 38318720 is about 6190.2116280463. The cubic root of 38318720 is about 337.1348625346.

The spelling of 38318720 in words is "thirty-eight million, three hundred eighteen thousand, seven hundred twenty".