38536640 has 28 divisors (see below), whose sum is σ = 91766136. Its totient is φ = 15414528.

The previous prime is 38536639. The next prime is 38536649. The reversal of 38536640 is 4663583.

It is a self number, because there is not a number n which added to its sum of digits gives 38536640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38536649) 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, 59894 + ... + 60533.

It is an arithmetic number, because the mean of its divisors is an integer number (3277362).

Almost surely, 2^38536640 is an apocalyptic number.

It is an amenable number.

38536640 is an abundant number, since it is smaller than the sum of its proper divisors (53229496).

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

38536640 is a wasteful number, since it uses less digits than its factorization.

38536640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120444 (or 120434 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 38536640 is about 6207.7886561963. The cubic root of 38536640 is about 337.7727543626.

The spelling of 38536640 in words is "thirty-eight million, five hundred thirty-six thousand, six hundred forty".