130978944 has 96 divisors (see below), whose sum is σ = 390957840. Its totient is φ = 43649280.

The previous prime is 130978943. The next prime is 130978949. The reversal of 130978944 is 449879031.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 130978944.

It is not an unprimeable number, because it can be changed into a prime (130978943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28999 + ... + 33209.

Almost surely, 2^130978944 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 130978944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195478920).

130978944 is an abundant number, since it is smaller than the sum of its proper divisors (259978896).

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

130978944 is an frugal number, since it uses more digits than its factorization.

130978944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240 (or 4216 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 130978944 is about 11444.6032696638. The cubic root of 130978944 is about 507.8480956110.

The spelling of 130978944 in words is "one hundred thirty million, nine hundred seventy-eight thousand, nine hundred forty-four".