38253681 has 8 divisors (see below), whose sum is σ = 56672160. Its totient is φ = 25502436.

The previous prime is 38253661. The next prime is 38253701. The reversal of 38253681 is 18635283.

38253681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38253661) and next prime (38253701).

It is a de Polignac number, because none of the positive numbers 2^k-38253681 is a prime.

It is a super-2 number, since 2×38253681² = 2926688220099522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38253601) 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 7 ways as a sum of consecutive naturals, for example, 708375 + ... + 708428.

It is an arithmetic number, because the mean of its divisors is an integer number (7084020).

Almost surely, 2^38253681 is an apocalyptic number.

It is an amenable number.

38253681 is a deficient number, since it is larger than the sum of its proper divisors (18418479).

38253681 is a wasteful number, since it uses less digits than its factorization.

38253681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416812 (or 1416806 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 38253681 is about 6184.9560224791. The cubic root of 38253681 is about 336.9440129823.

The spelling of 38253681 in words is "thirty-eight million, two hundred fifty-three thousand, six hundred eighty-one".