38727640 has 48 divisors (see below), whose sum is σ = 101368800. Its totient is φ = 13277376.

The previous prime is 38727631. The next prime is 38727679. The reversal of 38727640 is 4672783.

It is a self number, because there is not a number n which added to its sum of digits gives 38727640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7920 + ... + 11839.

It is an arithmetic number, because the mean of its divisors is an integer number (2111850).

Almost surely, 2^38727640 is an apocalyptic number.

It is an amenable number.

38727640 is an abundant number, since it is smaller than the sum of its proper divisors (62641160).

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

38727640 is a wasteful number, since it uses less digits than its factorization.

38727640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19784 (or 19773 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 38727640 is about 6223.1535414129. The cubic root of 38727640 is about 338.3298718103.

The spelling of 38727640 in words is "thirty-eight million, seven hundred twenty-seven thousand, six hundred forty".