38820344 has 32 divisors (see below), whose sum is σ = 77260800. Its totient is φ = 18234720.

The previous prime is 38820307. The next prime is 38820347. The reversal of 38820344 is 44302883.

It is a self number, because there is not a number n which added to its sum of digits gives 38820344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38820347) 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, 18299 + ... + 20309.

It is an arithmetic number, because the mean of its divisors is an integer number (2414400).

Almost surely, 2^38820344 is an apocalyptic number.

It is an amenable number.

38820344 is a deficient number, since it is larger than the sum of its proper divisors (38440456).

38820344 is a wasteful number, since it uses less digits than its factorization.

38820344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163 (or 2159 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 38820344 is about 6230.5974031388. The cubic root of 38820344 is about 338.5996148969.

The spelling of 38820344 in words is "thirty-eight million, eight hundred twenty thousand, three hundred forty-four".