130261644 has 72 divisors (see below), whose sum is σ = 349097840. Its totient is φ = 40839552.

The previous prime is 130261639. The next prime is 130261697. The reversal of 130261644 is 446162031.

130261644 is a `hidden beast` number, since 1 + 3 + 0 + 2 + 616 + 44 = 666.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 106782 + ... + 107994.

Almost surely, 2^130261644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130261644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174548920).

130261644 is an abundant number, since it is smaller than the sum of its proper divisors (218836196).

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

130261644 is a wasteful number, since it uses less digits than its factorization.

130261644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 130261644 is about 11413.2223320147. Note that the first 3 decimals coincide. The cubic root of 130261644 is about 506.9193293915.

The spelling of 130261644 in words is "one hundred thirty million, two hundred sixty-one thousand, six hundred forty-four".