38394740 has 24 divisors (see below), whose sum is σ = 83231232. Its totient is φ = 14862240.

The previous prime is 38394739. The next prime is 38394749. The reversal of 38394740 is 4749383.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 38394694 and 38394703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38394749) 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, 30344 + ... + 31583.

It is an arithmetic number, because the mean of its divisors is an integer number (3467968).

Almost surely, 2^38394740 is an apocalyptic number.

It is an amenable number.

38394740 is an abundant number, since it is smaller than the sum of its proper divisors (44836492).

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

38394740 is a wasteful number, since it uses less digits than its factorization.

38394740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61967 (or 61965 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 38394740 is about 6196.3489249719. The cubic root of 38394740 is about 337.3576610568.

The spelling of 38394740 in words is "thirty-eight million, three hundred ninety-four thousand, seven hundred forty".