129285948 has 24 divisors (see below), whose sum is σ = 329091840. Its totient is φ = 39177520.

The previous prime is 129285943. The next prime is 129285953. The reversal of 129285948 is 849582921.

It is an interprime number because it is at equal distance from previous prime (129285943) and next prime (129285953).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 129285897 and 129285906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129285943) 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, 489588 + ... + 489851.

It is an arithmetic number, because the mean of its divisors is an integer number (13712160).

Almost surely, 2^129285948 is an apocalyptic number.

It is an amenable number.

129285948 is an abundant number, since it is smaller than the sum of its proper divisors (199805892).

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

129285948 is a wasteful number, since it uses less digits than its factorization.

129285948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979457 (or 979455 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 129285948 is about 11370.3978822203. The cubic root of 129285948 is about 505.6505004753.

The spelling of 129285948 in words is "one hundred twenty-nine million, two hundred eighty-five thousand, nine hundred forty-eight".