38302640 has 40 divisors (see below), whose sum is σ = 89311248. Its totient is φ = 15276800.

The previous prime is 38302633. The next prime is 38302643. The reversal of 38302640 is 4620383.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (38302643) 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 7 ways as a sum of consecutive naturals, for example, 54290 + ... + 54990.

Almost surely, 2^38302640 is an apocalyptic number.

It is an amenable number.

38302640 is an abundant number, since it is smaller than the sum of its proper divisors (51008608).

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

38302640 is a wasteful number, since it uses less digits than its factorization.

38302640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 38302640 is about 6188.9126670200. The cubic root of 38302640 is about 337.0876977105.

The spelling of 38302640 in words is "thirty-eight million, three hundred two thousand, six hundred forty".