130533438 has 32 divisors (see below), whose sum is σ = 302146560. Its totient is φ = 36822240.

The previous prime is 130533433. The next prime is 130533451. The reversal of 130533438 is 834335031.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130533433) 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, 16353 + ... + 22988.

It is an arithmetic number, because the mean of its divisors is an integer number (9442080).

Almost surely, 2^130533438 is an apocalyptic number.

130533438 is an abundant number, since it is smaller than the sum of its proper divisors (171613122).

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

130533438 is a wasteful number, since it uses less digits than its factorization.

130533438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39432.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 130533438 is about 11425.1231065578. The cubic root of 130533438 is about 507.2716508513.

Adding to 130533438 its reverse (834335031), we get a palindrome (964868469).

It can be divided in two parts, 1305 and 33438, that added together give a palindrome (34743).

The spelling of 130533438 in words is "one hundred thirty million, five hundred thirty-three thousand, four hundred thirty-eight".