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1315134520 = 23572670987
BaseRepresentation
bin100111001100011…
…0101110000111000
310101122122202101221
41032120311300320
510143133301040
6334255521424
744406313300
oct11630656070
93348582357
101315134520
116153a5037
12308529274
1317c60690b
14c6940600
157a6ce74a
hex4e635c38

1315134520 has 48 divisors (see below), whose sum is σ = 3442168440. Its totient is φ = 450902592.

The previous prime is 1315134517. The next prime is 1315134529. The reversal of 1315134520 is 254315131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315134529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333534 + ... + 337453.

Almost surely, 21315134520 is an apocalyptic number.

1315134520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315134520 is an abundant number, since it is smaller than the sum of its proper divisors (2127033920).

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

1315134520 is a wasteful number, since it uses less digits than its factorization.

1315134520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671012 (or 671001 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1315134520 is about 36264.7834682630. The cubic root of 1315134520 is about 1095.6118624013.

Adding to 1315134520 its reverse (254315131), we get a palindrome (1569449651).

The spelling of 1315134520 in words is "one billion, three hundred fifteen million, one hundred thirty-four thousand, five hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 49 56 70 98 140 196 245 280 392 490 980 1960 670987 1341974 2683948 3354935 4696909 5367896 6709870 9393818 13419740 18787636 23484545 26839480 32878363 37575272 46969090 65756726 93938180 131513452 164391815 187876360 263026904 328783630 657567260 1315134520