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130240040 = 2357266449
BaseRepresentation
bin1111100001101…
…00111000101000
3100002001212202012
413300310320220
5231320140130
620531255052
73141010400
oct760647050
9302055665
10130240040
11675762a7
123774a488
1320ca0b18
1413423800
15b679995
hex7c34e28

130240040 has 48 divisors (see below), whose sum is σ = 340888500. Its totient is φ = 44653056.

The previous prime is 130240039. The next prime is 130240051. The reversal of 130240040 is 40042031.

It can be written as a sum of positive squares in 2 ways, for example, as 122633476 + 7606564 = 11074^2 + 2758^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 130239997 and 130240024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31265 + ... + 35184.

Almost surely, 2130240040 is an apocalyptic number.

130240040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130240040 is an abundant number, since it is smaller than the sum of its proper divisors (210648460).

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

130240040 is a wasteful number, since it uses less digits than its factorization.

130240040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66474 (or 66463 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 130240040 is about 11412.2758466486. The cubic root of 130240040 is about 506.8913035138.

Adding to 130240040 its reverse (40042031), we get a palindrome (170282071).

The spelling of 130240040 in words is "one hundred thirty million, two hundred forty thousand, forty".