129670464 has 224 divisors, whose sum is σ = 438912000. Its totient is φ = 33492480.

The previous prime is 129670451. The next prime is 129670469. The reversal of 129670464 is 464076921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129670469) 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, 724327 + ... + 724505.

Almost surely, 2^129670464 is an apocalyptic number.

129670464 is a gapful number since it is divisible by the number (14) 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 129670464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219456000).

129670464 is an abundant number, since it is smaller than the sum of its proper divisors (309241536).

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

129670464 is a wasteful number, since it uses less digits than its factorization.

129670464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 129670464 is about 11387.2939717915. The cubic root of 129670464 is about 506.1512980568.

The spelling of 129670464 in words is "one hundred twenty-nine million, six hundred seventy thousand, four hundred sixty-four".