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13052454520 = 2357311503739
BaseRepresentation
bin11000010011111110…
…01010011001111000
31020200122111101112111
430021333022121320
5203212412021040
65555103222104
7641311014160
oct141177123170
936618441474
1013052454520
1155988522a6
1226432a7934
131300209391
148bb7015a0
15515d63dea
hex309fca678

13052454520 has 64 divisors (see below), whose sum is σ = 34646169600. Its totient is φ = 4330765440.

The previous prime is 13052454469. The next prime is 13052454557. The reversal of 13052454520 is 2545425031.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743190 + ... + 760549.

It is an arithmetic number, because the mean of its divisors is an integer number (541346400).

Almost surely, 213052454520 is an apocalyptic number.

13052454520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13052454520 is an abundant number, since it is smaller than the sum of its proper divisors (21593715080).

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

13052454520 is a wasteful number, since it uses less digits than its factorization.

13052454520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503788 (or 1503784 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 13052454520 its reverse (2545425031), we get a palindrome (15597879551).

The spelling of 13052454520 in words is "thirteen billion, fifty-two million, four hundred fifty-four thousand, five hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 31 35 40 56 62 70 124 140 155 217 248 280 310 434 620 868 1085 1240 1736 2170 4340 8680 1503739 3007478 6014956 7518695 10526173 12029912 15037390 21052346 30074780 42104692 46615909 52630865 60149560 84209384 93231818 105261730 186463636 210523460 233079545 326311363 372927272 421046920 466159090 652622726 932318180 1305245452 1631556815 1864636360 2610490904 3263113630 6526227260 13052454520