38140812 has 18 divisors (see below), whose sum is σ = 96411588. Its totient is φ = 12713592.

The previous prime is 38140807. The next prime is 38140813. The reversal of 38140812 is 21804183.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (38140813) 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, 529698 + ... + 529769.

Almost surely, 2^38140812 is an apocalyptic number.

It is an amenable number.

38140812 is an abundant number, since it is smaller than the sum of its proper divisors (58270776).

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

38140812 is a wasteful number, since it uses less digits than its factorization.

38140812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059477 (or 1059472 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 38140812 is about 6175.8248032145. The cubic root of 38140812 is about 336.6122976391.

Adding to 38140812 its reverse (21804183), we get a palindrome (59944995).

The spelling of 38140812 in words is "thirty-eight million, one hundred forty thousand, eight hundred twelve".