Search a number
-
+
13241471805 = 325294254929
BaseRepresentation
bin11000101010100000…
…01101001100111101
31021011211011110111200
430111100031030331
5204104304044210
610025534410113
7646064440032
oct142520151475
937154143450
1013241471805
115685513831
122696660939
131330419723
148d8865389
1552774e0c0
hex31540d33d

13241471805 has 12 divisors (see below), whose sum is σ = 22951884540. Its totient is φ = 7062118272.

The previous prime is 13241471791. The next prime is 13241471827. The reversal of 13241471805 is 50817414231.

It can be written as a sum of positive squares in 2 ways, for example, as 4152900249 + 9088571556 = 64443^2 + 95334^2 .

It is not a de Polignac number, because 13241471805 - 217 = 13241340733 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13241471805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147127420 + ... + 147127509.

It is an arithmetic number, because the mean of its divisors is an integer number (1912657045).

Almost surely, 213241471805 is an apocalyptic number.

13241471805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13241471805 is a deficient number, since it is larger than the sum of its proper divisors (9710412735).

13241471805 is a wasteful number, since it uses less digits than its factorization.

13241471805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294254940 (or 294254937 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 13241471805 in words is "thirteen billion, two hundred forty-one million, four hundred seventy-one thousand, eight hundred five".

Divisors: 1 3 5 9 15 45 294254929 882764787 1471274645 2648294361 4413823935 13241471805