38906940 has 24 divisors (see below), whose sum is σ = 108939600. Its totient is φ = 10375168.

The previous prime is 38906921. The next prime is 38906957. The reversal of 38906940 is 4960983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324165 + ... + 324284.

It is an arithmetic number, because the mean of its divisors is an integer number (4539150).

Almost surely, 2^38906940 is an apocalyptic number.

38906940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38906940 is an abundant number, since it is smaller than the sum of its proper divisors (70032660).

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

38906940 is a wasteful number, since it uses less digits than its factorization.

38906940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648461 (or 648459 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 38906940 is about 6237.5427854244. The cubic root of 38906940 is about 338.8511977352.

The spelling of 38906940 in words is "thirty-eight million, nine hundred six thousand, nine hundred forty".