38982640 has 20 divisors (see below), whose sum is σ = 90634824. Its totient is φ = 15593024.

The previous prime is 38982637. The next prime is 38982653. The reversal of 38982640 is 4628983.

38982640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 38982593 and 38982602.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 243562 + ... + 243721.

Almost surely, 2^38982640 is an apocalyptic number.

It is an amenable number.

38982640 is an abundant number, since it is smaller than the sum of its proper divisors (51652184).

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

38982640 is a wasteful number, since it uses less digits than its factorization.

38982640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487296 (or 487290 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 38982640 is about 6243.6079313166. The cubic root of 38982640 is about 339.0708193716.

The spelling of 38982640 in words is "thirty-eight million, nine hundred eighty-two thousand, six hundred forty".