Search a number
-
+
3138087 = 31046029
BaseRepresentation
bin1011111110001000100111
312220102122110
423332020213
51300404322
6151132103
735446641
oct13761047
95812573
103138087
111853767
121074033
1385b474
145b9891
1541ec0c
hex2fe227

3138087 has 4 divisors (see below), whose sum is σ = 4184120. Its totient is φ = 2092056.

The previous prime is 3138073. The next prime is 3138103. The reversal of 3138087 is 7808313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7808313 = 32602771.

It is not a de Polignac number, because 3138087 - 24 = 3138071 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138067) 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 3 ways as a sum of consecutive naturals, for example, 523012 + ... + 523017.

It is an arithmetic number, because the mean of its divisors is an integer number (1046030).

Almost surely, 23138087 is an apocalyptic number.

3138087 is a deficient number, since it is larger than the sum of its proper divisors (1046033).

3138087 is a wasteful number, since it uses less digits than its factorization.

3138087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046032.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 3138087 is about 1771.4646482501. The cubic root of 3138087 is about 146.4046913155.

The spelling of 3138087 in words is "three million, one hundred thirty-eight thousand, eighty-seven".

Divisors: 1 3 1046029 3138087