38647145 has 16 divisors (see below), whose sum is σ = 47354112. Its totient is φ = 30273600.

The previous prime is 38647139. The next prime is 38647163. The reversal of 38647145 is 54174683.

38647145 = 333² + 334² + ... + 534².

It is not a de Polignac number, because 38647145 - 2¹⁸ = 38385001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38647099 and 38647108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51644 + ... + 52386.

It is an arithmetic number, because the mean of its divisors is an integer number (2959632).

Almost surely, 2^38647145 is an apocalyptic number.

It is an amenable number.

38647145 is a deficient number, since it is larger than the sum of its proper divisors (8706967).

38647145 is a wasteful number, since it uses less digits than its factorization.

38647145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952.

The product of its digits is 80640, while the sum is 38.

The square root of 38647145 is about 6216.6827971194. The cubic root of 38647145 is about 338.0953041709.

The spelling of 38647145 in words is "thirty-eight million, six hundred forty-seven thousand, one hundred forty-five".