38623728 has 160 divisors (see below), whose sum is σ = 124492032. Its totient is φ = 10137600.

The previous prime is 38623723. The next prime is 38623729. The reversal of 38623728 is 82732683.

It is a happy number.

38623728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38623723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116523 + ... + 116853.

Almost surely, 2^38623728 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 38623728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62246016).

38623728 is an abundant number, since it is smaller than the sum of its proper divisors (85868304).

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

38623728 is a wasteful number, since it uses less digits than its factorization.

38623728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 377 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 38623728 is about 6214.7991117976. The cubic root of 38623728 is about 338.0270043665.

The spelling of 38623728 in words is "thirty-eight million, six hundred twenty-three thousand, seven hundred twenty-eight".