38640632 has 16 divisors (see below), whose sum is σ = 74788800. Its totient is φ = 18696960.

The previous prime is 38640631. The next prime is 38640647. The reversal of 38640632 is 23604683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38640631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77657 + ... + 78152.

It is an arithmetic number, because the mean of its divisors is an integer number (4674300).

Almost surely, 2^38640632 is an apocalyptic number.

It is an amenable number.

38640632 is a deficient number, since it is larger than the sum of its proper divisors (36148168).

38640632 is a wasteful number, since it uses less digits than its factorization.

38640632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155846 (or 155842 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 38640632 is about 6216.1589426269. The cubic root of 38640632 is about 338.0763106296.

The spelling of 38640632 in words is "thirty-eight million, six hundred forty thousand, six hundred thirty-two".