38406516 has 12 divisors (see below), whose sum is σ = 89615232. Its totient is φ = 12802168.

The previous prime is 38406499. The next prime is 38406517. The reversal of 38406516 is 61560483.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38406517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1600260 + ... + 1600283.

It is an arithmetic number, because the mean of its divisors is an integer number (7467936).

Almost surely, 2^38406516 is an apocalyptic number.

It is an amenable number.

38406516 is an abundant number, since it is smaller than the sum of its proper divisors (51208716).

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

38406516 is a wasteful number, since it uses less digits than its factorization.

38406516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200550 (or 3200548 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 38406516 is about 6197.2990891194. The cubic root of 38406516 is about 337.3921477055.

Adding to 38406516 its reverse (61560483), we get a palindrome (99966999).

The spelling of 38406516 in words is "thirty-eight million, four hundred six thousand, five hundred sixteen".