130401730 has 64 divisors (see below), whose sum is σ = 260130528. Its totient is φ = 46858240.

The previous prime is 130401721. The next prime is 130401737. The reversal of 130401730 is 37104031.

It can be written as a sum of positive squares in 16 ways, for example, as 8277129 + 122124601 = 2877^2 + 11051^2 .

It is a super-2 number, since 2×130401730² = 34009222373985800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 130401698 and 130401707.

It is not an unprimeable number, because it can be changed into a prime (130401737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369234 + ... + 369586.

Almost surely, 2^130401730 is an apocalyptic number.

130401730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130401730 is a deficient number, since it is larger than the sum of its proper divisors (129728798).

130401730 is a wasteful number, since it uses less digits than its factorization.

130401730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 130401730 is about 11419.3576877161. The cubic root of 130401730 is about 507.1009813809.

Adding to 130401730 its reverse (37104031), we get a palindrome (167505761).

It can be divided in two parts, 130401 and 730, that added together give a palindrome (131131).

The spelling of 130401730 in words is "one hundred thirty million, four hundred one thousand, seven hundred thirty".