129602028 has 24 divisors (see below), whose sum is σ = 306234880. Its totient is φ = 42653520.

The previous prime is 129602027. The next prime is 129602029. The reversal of 129602028 is 820206921.

It is an interprime number because it is at equal distance from previous prime (129602027) and next prime (129602029).

It is a junction number, because it is equal to n+sod(n) for n = 129601986 and 129602004.

It is not an unprimeable number, because it can be changed into a prime (129602027) 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, 67408 + ... + 69303.

Almost surely, 2^129602028 is an apocalyptic number.

It is an amenable number.

129602028 is an abundant number, since it is smaller than the sum of its proper divisors (176632852).

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

129602028 is a wasteful number, since it uses less digits than its factorization.

129602028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136797 (or 136795 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 129602028 is about 11384.2886470785. The cubic root of 129602028 is about 506.0622387991.

Adding to 129602028 its reverse (820206921), we get a palindrome (949808949).

The spelling of 129602028 in words is "one hundred twenty-nine million, six hundred two thousand, twenty-eight".