129800360 has 16 divisors (see below), whose sum is σ = 292050900. Its totient is φ = 51920128.

The previous prime is 129800347. The next prime is 129800369. The reversal of 129800360 is 63008921.

It can be written as a sum of positive squares in 2 ways, for example, as 105966436 + 23833924 = 10294^2 + 4882^2 .

It is a super-2 number, since 2×129800360² = 33696266912259200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129800369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1622465 + ... + 1622544.

Almost surely, 2^129800360 is an apocalyptic number.

129800360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129800360 is an abundant number, since it is smaller than the sum of its proper divisors (162250540).

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

129800360 is a wasteful number, since it uses less digits than its factorization.

129800360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245020 (or 3245016 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 129800360 is about 11392.9960940922. The cubic root of 129800360 is about 506.3202522026.

The spelling of 129800360 in words is "one hundred twenty-nine million, eight hundred thousand, three hundred sixty".