Search a number
-
+
15144007 = 19797053
BaseRepresentation
bin111001110001…
…010001000111
31001111101200011
4321301101013
512334102012
61300331051
7242502424
oct71612107
931441604
1015144007
118603a0a
1250a3a87
1331a3068
142022d4b
1514e21a7
hexe71447

15144007 has 4 divisors (see below), whose sum is σ = 15941080. Its totient is φ = 14346936.

The previous prime is 15144001. The next prime is 15144029. The reversal of 15144007 is 70044151.

15144007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70044151 = 591187189.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-15144007 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 (15144001) 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, 398508 + ... + 398545.

It is an arithmetic number, because the mean of its divisors is an integer number (3985270).

Almost surely, 215144007 is an apocalyptic number.

15144007 is a deficient number, since it is larger than the sum of its proper divisors (797073).

15144007 is an equidigital number, since it uses as much as digits as its factorization.

15144007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797072.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 15144007 is about 3891.5301617744. The cubic root of 15144007 is about 247.4079213986.

Adding to 15144007 its reverse (70044151), we get a palindrome (85188158).

The spelling of 15144007 in words is "fifteen million, one hundred forty-four thousand, seven".

Divisors: 1 19 797053 15144007