38289729 has 16 divisors (see below), whose sum is σ = 54276480. Its totient is φ = 23927040.

The previous prime is 38289703. The next prime is 38289751. The reversal of 38289729 is 92798283.

It is a happy number.

It is not a de Polignac number, because 38289729 - 2¹¹ = 38287681 is a prime.

It is a super-2 number, since 2×38289729² = 2932206693786882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38285729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12324 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (3392280).

Almost surely, 2^38289729 is an apocalyptic number.

It is an amenable number.

38289729 is a deficient number, since it is larger than the sum of its proper divisors (15986751).

38289729 is a wasteful number, since it uses less digits than its factorization.

38289729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080.

The product of its digits is 435456, while the sum is 48.

The square root of 38289729 is about 6187.8695041185. The cubic root of 38289729 is about 337.0498184384.

The spelling of 38289729 in words is "thirty-eight million, two hundred eighty-nine thousand, seven hundred twenty-nine".