38642634 has 12 divisors (see below), whose sum is σ = 83725746. Its totient is φ = 12880872.

The previous prime is 38642633. The next prime is 38642651. The reversal of 38642634 is 43624683.

It is a happy number.

38642634 is a `hidden beast` number, since 3 + 8 + 642 + 6 + 3 + 4 = 666.

38642634 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 only one way, i.e., 37859409 + 783225 = 6153^2 + 885^2 .

It is not an unprimeable number, because it can be changed into a prime (38642633) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1073389 + ... + 1073424.

Almost surely, 2^38642634 is an apocalyptic number.

38642634 is an abundant number, since it is smaller than the sum of its proper divisors (45083112).

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

38642634 is a wasteful number, since it uses less digits than its factorization.

38642634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146821 (or 2146818 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 38642634 is about 6216.3199724596. The cubic root of 38642634 is about 338.0821491908.

The spelling of 38642634 in words is "thirty-eight million, six hundred forty-two thousand, six hundred thirty-four".