130021650 has 72 divisors (see below), whose sum is σ = 381096144. Its totient is φ = 31519200.

The previous prime is 130021649. The next prime is 130021651. The reversal of 130021650 is 56120031.

130021650 is a `hidden beast` number, since 13 + 0 + 0 + 2 + 1 + 650 = 666.

It is an interprime number because it is at equal distance from previous prime (130021649) and next prime (130021651).

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

It is not an unprimeable number, because it can be changed into a prime (130021651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8184 + ... + 18083.

It is an arithmetic number, because the mean of its divisors is an integer number (5293002).

Almost surely, 2^130021650 is an apocalyptic number.

130021650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130021650 is an abundant number, since it is smaller than the sum of its proper divisors (251074494).

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

130021650 is a wasteful number, since it uses less digits than its factorization.

130021650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26296 (or 26288 counting only the distinct ones).

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

The square root of 130021650 is about 11402.7036267720. The cubic root of 130021650 is about 506.6078220172.

Adding to 130021650 its reverse (56120031), we get a palindrome (186141681).

The spelling of 130021650 in words is "one hundred thirty million, twenty-one thousand, six hundred fifty".