Search a number
-
+
38258013 = 312752671
BaseRepresentation
bin1001000111110…
…0010101011101
32122222201010110
42101330111131
534243224023
63444000233
7643121253
oct221742535
978881113
1038258013
111a6608a2
1210990079
137c069a1
14511c5d3
15355aa93
hex247c55d

38258013 has 4 divisors (see below), whose sum is σ = 51010688. Its totient is φ = 25505340.

The previous prime is 38258009. The next prime is 38258021. The reversal of 38258013 is 31085283.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 38258013 - 22 = 38258009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38258053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6376333 + ... + 6376338.

It is an arithmetic number, because the mean of its divisors is an integer number (12752672).

Almost surely, 238258013 is an apocalyptic number.

It is an amenable number.

38258013 is a deficient number, since it is larger than the sum of its proper divisors (12752675).

38258013 is a wasteful number, since it uses less digits than its factorization.

38258013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12752674.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 38258013 is about 6185.3062171569. The cubic root of 38258013 is about 336.9567314652.

The spelling of 38258013 in words is "thirty-eight million, two hundred fifty-eight thousand, thirteen".

Divisors: 1 3 12752671 38258013