130145428 has 48 divisors (see below), whose sum is σ = 268894080. Its totient is φ = 53951616.

The previous prime is 130145419. The next prime is 130145429. The reversal of 130145428 is 824541031.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 130145396 and 130145405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130145429) 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, 278451 + ... + 278917.

It is an arithmetic number, because the mean of its divisors is an integer number (5601960).

Almost surely, 2^130145428 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 130145428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134447040).

130145428 is an abundant number, since it is smaller than the sum of its proper divisors (138748652).

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

130145428 is a wasteful number, since it uses less digits than its factorization.

130145428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 130145428 is about 11408.1299080962. The cubic root of 130145428 is about 506.7685311887.

Adding to 130145428 its reverse (824541031), we get a palindrome (954686459).

The spelling of 130145428 in words is "one hundred thirty million, one hundred forty-five thousand, four hundred twenty-eight".