38820438 has 16 divisors (see below), whose sum is σ = 86267760. Its totient is φ = 12940128.

The previous prime is 38820377. The next prime is 38820493. The reversal of 38820438 is 83402883.

It is a happy number.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 359395 + ... + 359502.

It is an arithmetic number, because the mean of its divisors is an integer number (5391735).

Almost surely, 2^38820438 is an apocalyptic number.

38820438 is an abundant number, since it is smaller than the sum of its proper divisors (47447322).

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

38820438 is a wasteful number, since it uses less digits than its factorization.

38820438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718908 (or 718902 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 38820438 is about 6230.6049465521. The cubic root of 38820438 is about 338.5998881930.

The spelling of 38820438 in words is "thirty-eight million, eight hundred twenty thousand, four hundred thirty-eight".