38761640 has 16 divisors (see below), whose sum is σ = 87213780. Its totient is φ = 15504640.

The previous prime is 38761631. The next prime is 38761651. The reversal of 38761640 is 4616783.

38761640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37429924 + 1331716 = 6118^2 + 1154^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38761640.

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, 484481 + ... + 484560.

Almost surely, 2^38761640 is an apocalyptic number.

It is an amenable number.

38761640 is an abundant number, since it is smaller than the sum of its proper divisors (48452140).

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

38761640 is a wasteful number, since it uses less digits than its factorization.

38761640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969052 (or 969048 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 38761640 is about 6225.8846760922. The cubic root of 38761640 is about 338.4288523744.

The spelling of 38761640 in words is "thirty-eight million, seven hundred sixty-one thousand, six hundred forty".