38684436 has 48 divisors (see below), whose sum is σ = 107649024. Its totient is φ = 10571616.

The previous prime is 38684389. The next prime is 38684467. The reversal of 38684436 is 63448683.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8080 + ... + 11943.

It is an arithmetic number, because the mean of its divisors is an integer number (2242688).

Almost surely, 2^38684436 is an apocalyptic number.

It is an amenable number.

38684436 is an abundant number, since it is smaller than the sum of its proper divisors (68964588).

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

38684436 is a wasteful number, since it uses less digits than its factorization.

38684436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20060 (or 20058 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The square root of 38684436 is about 6219.6813423197. The cubic root of 38684436 is about 338.2040130116.

The spelling of 38684436 in words is "thirty-eight million, six hundred eighty-four thousand, four hundred thirty-six".