38620281 has 12 divisors (see below), whose sum is σ = 59901072. Its totient is φ = 22068648.

The previous prime is 38620271. The next prime is 38620301. The reversal of 38620281 is 18202683.

38620281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38620281 - 2¹¹ = 38618233 is a prime.

It is a super-2 number, since 2×38620281² = 2983052209037922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38620201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131215 + ... + 131508.

It is an arithmetic number, because the mean of its divisors is an integer number (4991756).

Almost surely, 2^38620281 is an apocalyptic number.

It is an amenable number.

38620281 is a deficient number, since it is larger than the sum of its proper divisors (21280791).

38620281 is a wasteful number, since it uses less digits than its factorization.

38620281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262740 (or 262733 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 38620281 is about 6214.5217836934. The cubic root of 38620281 is about 338.0169482532.

The spelling of 38620281 in words is "thirty-eight million, six hundred twenty thousand, two hundred eighty-one".