38671540 has 12 divisors (see below), whose sum is σ = 81210276. Its totient is φ = 15468608.

The previous prime is 38671513. The next prime is 38671541. The reversal of 38671540 is 4517683.

It can be written as a sum of positive squares in 2 ways, for example, as 4822416 + 33849124 = 2196^2 + 5818^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38671496 and 38671505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38671541) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 966769 + ... + 966808.

It is an arithmetic number, because the mean of its divisors is an integer number (6767523).

Almost surely, 2^38671540 is an apocalyptic number.

It is an amenable number.

38671540 is an abundant number, since it is smaller than the sum of its proper divisors (42538736).

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

38671540 is a wasteful number, since it uses less digits than its factorization.

38671540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933586 (or 1933584 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 38671540 is about 6218.6445468446. The cubic root of 38671540 is about 338.1664271490.

The spelling of 38671540 in words is "thirty-eight million, six hundred seventy-one thousand, five hundred forty".