Search a number
-
+
13248470405 = 521371239913
BaseRepresentation
bin11000101011010101…
…11001110110000101
31021012022100000210002
430111222321312011
5204113102023110
610030344411045
7646211066102
oct142552716605
937168300702
1013248470405
1156894639a5
122698a76a85
1313319ca101
148d9767aa9
15528182aa5
hex315ab9d85

13248470405 has 8 divisors (see below), whose sum is σ = 15905616792. Its totient is φ = 10593808128.

The previous prime is 13248470383. The next prime is 13248470483. The reversal of 13248470405 is 50407484231.

It is a Cunningham number, because it is equal to 1151022+1.

It can be written as a sum of positive squares in 4 ways, for example, as 600544036 + 12647926369 = 24506^2 + 112463^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13248470405 - 28 = 13248470149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609272 + ... + 630641.

It is an arithmetic number, because the mean of its divisors is an integer number (1988202099).

Almost surely, 213248470405 is an apocalyptic number.

It is an amenable number.

13248470405 is a deficient number, since it is larger than the sum of its proper divisors (2657146387).

13248470405 is a wasteful number, since it uses less digits than its factorization.

13248470405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242055.

The product of its (nonzero) digits is 107520, while the sum is 38.

The spelling of 13248470405 in words is "thirteen billion, two hundred forty-eight million, four hundred seventy thousand, four hundred five".

Divisors: 1 5 2137 10685 1239913 6199565 2649694081 13248470405