129260088 has 24 divisors (see below), whose sum is σ = 350079600. Its totient is φ = 43086672.

The previous prime is 129260081. The next prime is 129260101. The reversal of 129260088 is 880062921.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129260081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 897568 + ... + 897711.

It is an arithmetic number, because the mean of its divisors is an integer number (14586650).

Almost surely, 2^129260088 is an apocalyptic number.

129260088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129260088 is an abundant number, since it is smaller than the sum of its proper divisors (220819512).

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

129260088 is a wasteful number, since it uses less digits than its factorization.

129260088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795291 (or 1795284 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 129260088 is about 11369.2606619780. The cubic root of 129260088 is about 505.6167845300.

The spelling of 129260088 in words is "one hundred twenty-nine million, two hundred sixty thousand, eighty-eight".