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6942387 = 39723857
BaseRepresentation
bin11010011110111010110011
3111001201011110
4122132322303
53234124022
6404444403
7113003124
oct32367263
914051143
106942387
113a11a11
1223a9703
131590c2a
14cca04b
1592200c
hex69eeb3

6942387 has 8 divisors (see below), whose sum is σ = 9352336. Its totient is φ = 4580352.

The previous prime is 6942379. The next prime is 6942401. The reversal of 6942387 is 7832496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6942387 - 23 = 6942379 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 68 + 95 + 49 + 213 + 314 + 85 + 76 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6942337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11638 + ... + 12219.

It is an arithmetic number, because the mean of its divisors is an integer number (1169042).

Almost surely, 26942387 is an apocalyptic number.

6942387 is a deficient number, since it is larger than the sum of its proper divisors (2409949).

6942387 is a wasteful number, since it uses less digits than its factorization.

6942387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23957.

The product of its digits is 72576, while the sum is 39.

The square root of 6942387 is about 2634.8409819190. The cubic root of 6942387 is about 190.7668637435.

It can be divided in two parts, 694 and 2387, that added together give a triangular number (3081 = T78).

The spelling of 6942387 in words is "six million, nine hundred forty-two thousand, three hundred eighty-seven".

Divisors: 1 3 97 291 23857 71571 2314129 6942387