129763320 has 32 divisors (see below), whose sum is σ = 389290320. Its totient is φ = 34603520.

The previous prime is 129763289. The next prime is 129763327. The reversal of 129763320 is 23367921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129763327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540561 + ... + 540800.

Almost surely, 2^129763320 is an apocalyptic number.

129763320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129763320 is an abundant number, since it is smaller than the sum of its proper divisors (259527000).

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

129763320 is a wasteful number, since it uses less digits than its factorization.

129763320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081375 (or 1081371 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 129763320 is about 11391.3704179962. The cubic root of 129763320 is about 506.2720862183.

The spelling of 129763320 in words is "one hundred twenty-nine million, seven hundred sixty-three thousand, three hundred twenty".