129677880 has 32 divisors (see below), whose sum is σ = 389034000. Its totient is φ = 34580736.

The previous prime is 129677861. The next prime is 129677881. The reversal of 129677880 is 88776921.

It is a super-2 number, since 2×129677880² = 33632705122588800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129677881) 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, 540205 + ... + 540444.

Almost surely, 2^129677880 is an apocalyptic number.

129677880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129677880 is an abundant number, since it is smaller than the sum of its proper divisors (259356120).

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

129677880 is a wasteful number, since it uses less digits than its factorization.

129677880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080663 (or 1080659 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 129677880 is about 11387.6195932249. The cubic root of 129677880 is about 506.1609469940.

The spelling of 129677880 in words is "one hundred twenty-nine million, six hundred seventy-seven thousand, eight hundred eighty".