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13047207550 = 2521320072627
BaseRepresentation
bin11000010011010110…
…01001011001111110
31020200021121211001021
430021223021121332
5203210041120200
65554354534354
7641215301656
oct141153113176
936607554037
1013047207550
115595899163
1226415973ba
1312cc0c0070
148bab37366
1551567941a
hex309ac967e

13047207550 has 24 divisors (see below), whose sum is σ = 26134561656. Its totient is φ = 4817430240.

The previous prime is 13047207461. The next prime is 13047207571. The reversal of 13047207550 is 5570274031.

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, 10035664 + ... + 10036963.

It is an arithmetic number, because the mean of its divisors is an integer number (1088940069).

Almost surely, 213047207550 is an apocalyptic number.

13047207550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13047207550 is an abundant number, since it is smaller than the sum of its proper divisors (13087354106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13047207550 is a wasteful number, since it uses less digits than its factorization.

13047207550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20072652 (or 20072647 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The spelling of 13047207550 in words is "thirteen billion, forty-seven million, two hundred seven thousand, five hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 20072627 40145254 100363135 200726270 260944151 501815675 521888302 1003631350 1304720755 2609441510 6523603775 13047207550