130665920 has 112 divisors (see below), whose sum is σ = 387998208. Its totient is φ = 40719360.

The previous prime is 130665917. The next prime is 130665923. The reversal of 130665920 is 29566031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (130665917) and next prime (130665923).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130665923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21989 + ... + 27291.

Almost surely, 2^130665920 is an apocalyptic number.

130665920 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 130665920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193999104).

130665920 is an abundant number, since it is smaller than the sum of its proper divisors (257332288).

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

130665920 is a wasteful number, since it uses less digits than its factorization.

130665920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338 (or 5328 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 130665920 is about 11430.9194730783. The cubic root of 130665920 is about 507.4432075058.

The spelling of 130665920 in words is "one hundred thirty million, six hundred sixty-five thousand, nine hundred twenty".