38721024 has 80 divisors (see below), whose sum is σ = 114657840. Its totient is φ = 12902400.

The previous prime is 38721013. The next prime is 38721037. The reversal of 38721024 is 42012783.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12424 + ... + 15224.

It is an arithmetic number, because the mean of its divisors is an integer number (1433223).

Almost surely, 2^38721024 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 38721024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57328920).

38721024 is an abundant number, since it is smaller than the sum of its proper divisors (75936816).

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

38721024 is an equidigital number, since it uses as much as digits as its factorization.

38721024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828 (or 2806 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 38721024 is about 6222.6219554140. The cubic root of 38721024 is about 338.3106046245.

The spelling of 38721024 in words is "thirty-eight million, seven hundred twenty-one thousand, twenty-four".