38389878 has 12 divisors (see below), whose sum is σ = 83178108. Its totient is φ = 12796620.

The previous prime is 38389867. The next prime is 38389891. The reversal of 38389878 is 87898383.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1066368 + ... + 1066403.

It is an arithmetic number, because the mean of its divisors is an integer number (6931509).

Almost surely, 2^38389878 is an apocalyptic number.

38389878 is an abundant number, since it is smaller than the sum of its proper divisors (44788230).

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

38389878 is a wasteful number, since it uses less digits than its factorization.

38389878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132779 (or 2132776 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 38389878 is about 6195.9565847414. The cubic root of 38389878 is about 337.3434203719.

The spelling of 38389878 in words is "thirty-eight million, three hundred eighty-nine thousand, eight hundred seventy-eight".