38640616 has 24 divisors (see below), whose sum is σ = 84280770. Its totient is φ = 16560096.

The previous prime is 38640607. The next prime is 38640619. The reversal of 38640616 is 61604683.

It can be written as a sum of positive squares in only one way, i.e., 37088100 + 1552516 = 6090^2 + 1246^2 .

It is not an unprimeable number, because it can be changed into a prime (38640619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48895 + ... + 49678.

Almost surely, 2^38640616 is an apocalyptic number.

It is an amenable number.

38640616 is an abundant number, since it is smaller than the sum of its proper divisors (45640154).

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

38640616 is a wasteful number, since it uses less digits than its factorization.

38640616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98593 (or 98582 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 38640616 is about 6216.1576556584. The cubic root of 38640616 is about 338.0762639670.

The spelling of 38640616 in words is "thirty-eight million, six hundred forty thousand, six hundred sixteen".