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130501760 = 275203909
BaseRepresentation
bin1111100011101…
…00110010000000
3100002120011202112
413301310302000
5231402024020
620541034452
73143150414
oct761646200
9302504675
10130501760
11677349a4
1237855a28
1321062c9c
1413490d44
15b6cc2c5
hex7c74c80

130501760 has 32 divisors (see below), whose sum is σ = 311982300. Its totient is φ = 52200448.

The previous prime is 130501757. The next prime is 130501783. The reversal of 130501760 is 67105031.

It can be written as a sum of positive squares in 2 ways, for example, as 129595456 + 906304 = 11384^2 + 952^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101315 + ... + 102594.

Almost surely, 2130501760 is an apocalyptic number.

130501760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130501760 is an abundant number, since it is smaller than the sum of its proper divisors (181480540).

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

130501760 is an equidigital number, since it uses as much as digits as its factorization.

130501760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203928 (or 203916 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 130501760 is about 11423.7366916434. The cubic root of 130501760 is about 507.2306124484.

Adding to 130501760 its reverse (67105031), we get a palindrome (197606791).

The spelling of 130501760 in words is "one hundred thirty million, five hundred one thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 203909 407818 815636 1019545 1631272 2039090 3262544 4078180 6525088 8156360 13050176 16312720 26100352 32625440 65250880 130501760