129863860 has 48 divisors (see below), whose sum is σ = 328083840. Its totient is φ = 42180480.

The previous prime is 129863857. The next prime is 129863863. The reversal of 129863860 is 68368921.

It is an interprime number because it is at equal distance from previous prime (129863857) and next prime (129863863).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129863863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21751 + ... + 27070.

It is an arithmetic number, because the mean of its divisors is an integer number (6835080).

Almost surely, 2^129863860 is an apocalyptic number.

129863860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129863860 is an abundant number, since it is smaller than the sum of its proper divisors (198219980).

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

129863860 is a wasteful number, since it uses less digits than its factorization.

129863860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48856 (or 48854 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 129863860 is about 11395.7825532080. The cubic root of 129863860 is about 506.4028048614.

The spelling of 129863860 in words is "one hundred twenty-nine million, eight hundred sixty-three thousand, eight hundred sixty".