130021560 has 96 divisors (see below), whose sum is σ = 444834000. Its totient is φ = 32845824.

The previous prime is 130021547. The next prime is 130021571. The reversal of 130021560 is 65120031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2665 + ... + 16344.

Almost surely, 2^130021560 is an apocalyptic number.

130021560 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 130021560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222417000).

130021560 is an abundant number, since it is smaller than the sum of its proper divisors (314812440).

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

130021560 is a wasteful number, since it uses less digits than its factorization.

130021560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19045 (or 19038 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 130021560 is about 11402.6996803389. The cubic root of 130021560 is about 506.6077051271.

Adding to 130021560 its reverse (65120031), we get a palindrome (195141591).

The spelling of 130021560 in words is "one hundred thirty million, twenty-one thousand, five hundred sixty".