38933940 has 96 divisors (see below), whose sum is σ = 115395840. Its totient is φ = 9788416.

The previous prime is 38933933. The next prime is 38933977. The reversal of 38933940 is 4933983.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122662 + ... + 122978.

It is an arithmetic number, because the mean of its divisors is an integer number (1202040).

Almost surely, 2^38933940 is an apocalyptic number.

38933940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38933940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57697920).

38933940 is an abundant number, since it is smaller than the sum of its proper divisors (76461900).

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

38933940 is a wasteful number, since it uses less digits than its factorization.

38933940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 38933940 is about 6239.7067238773. The cubic root of 38933940 is about 338.9295630756.

The spelling of 38933940 in words is "thirty-eight million, nine hundred thirty-three thousand, nine hundred forty".