38867920 has 160 divisors (see below), whose sum is σ = 117492480. Its totient is φ = 11612160.

The previous prime is 38867897. The next prime is 38867923. The reversal of 38867920 is 2976883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38867923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138180 + ... + 138460.

It is an arithmetic number, because the mean of its divisors is an integer number (734328).

Almost surely, 2^38867920 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 38867920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58746240).

38867920 is an abundant number, since it is smaller than the sum of its proper divisors (78624560).

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

38867920 is a wasteful number, since it uses less digits than its factorization.

38867920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 38867920 is about 6234.4141665436. The cubic root of 38867920 is about 338.7378812220.

The spelling of 38867920 in words is "thirty-eight million, eight hundred sixty-seven thousand, nine hundred twenty".