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130245240 = 23357115287
BaseRepresentation
bin1111100001101…
…10001001111000
3100002002010212210
413300312021320
5231320321430
620531335120
73141031506
oct760661170
9302063783
10130245240
116757a1a4
12377514a0
1320ca32b8
1413425676
15b67b2b0
hex7c36278

130245240 has 64 divisors (see below), whose sum is σ = 396264960. Its totient is φ = 34240640.

The previous prime is 130245223. The next prime is 130245263. The reversal of 130245240 is 42542031.

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, 877 + ... + 16163.

It is an arithmetic number, because the mean of its divisors is an integer number (6191640).

Almost surely, 2130245240 is an apocalyptic number.

130245240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130245240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198132480).

130245240 is an abundant number, since it is smaller than the sum of its proper divisors (266019720).

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

130245240 is a wasteful number, since it uses less digits than its factorization.

130245240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15372 (or 15368 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 130245240 is about 11412.5036692218. The cubic root of 130245240 is about 506.8980495184.

Adding to 130245240 its reverse (42542031), we get a palindrome (172787271).

The spelling of 130245240 in words is "one hundred thirty million, two hundred forty-five thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 71 120 142 213 284 355 426 568 710 852 1065 1420 1704 2130 2840 4260 8520 15287 30574 45861 61148 76435 91722 122296 152870 183444 229305 305740 366888 458610 611480 917220 1085377 1834440 2170754 3256131 4341508 5426885 6512262 8683016 10853770 13024524 16280655 21707540 26049048 32561310 43415080 65122620 130245240