38905340 has 24 divisors (see below), whose sum is σ = 81821040. Its totient is φ = 15539328.

The previous prime is 38905319. The next prime is 38905343. The reversal of 38905340 is 4350983.

It is a junction number, because it is equal to n+sod(n) for n = 38905297 and 38905306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38905343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21719 + ... + 23441.

It is an arithmetic number, because the mean of its divisors is an integer number (3409210).

Almost surely, 2^38905340 is an apocalyptic number.

It is an amenable number.

38905340 is an abundant number, since it is smaller than the sum of its proper divisors (42915700).

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

38905340 is a wasteful number, since it uses less digits than its factorization.

38905340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2859 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 38905340 is about 6237.4145284725. The cubic root of 38905340 is about 338.8465527254.

The spelling of 38905340 in words is "thirty-eight million, nine hundred five thousand, three hundred forty".