129572232 has 128 divisors (see below), whose sum is σ = 363916800. Its totient is φ = 38248448.

The previous prime is 129572221. The next prime is 129572237. The reversal of 129572232 is 232275921.

It is a junction number, because it is equal to n+sod(n) for n = 129572193 and 129572202.

It is not an unprimeable number, because it can be changed into a prime (129572237) 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, 555988 + ... + 556220.

It is an arithmetic number, because the mean of its divisors is an integer number (2843100).

Almost surely, 2^129572232 is an apocalyptic number.

129572232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129572232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181958400).

129572232 is an abundant number, since it is smaller than the sum of its proper divisors (234344568).

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

129572232 is a wasteful number, since it uses less digits than its factorization.

129572232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 331 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 129572232 is about 11382.9799261880. The cubic root of 129572232 is about 506.0234539478.

The spelling of 129572232 in words is "one hundred twenty-nine million, five hundred seventy-two thousand, two hundred thirty-two".