128734902 has 12 divisors (see below), whose sum is σ = 278925660. Its totient is φ = 42911628.

The previous prime is 128734901. The next prime is 128734913. The reversal of 128734902 is 209437821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128734901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3575952 + ... + 3575987.

It is an arithmetic number, because the mean of its divisors is an integer number (23243805).

Almost surely, 2^128734902 is an apocalyptic number.

128734902 is an abundant number, since it is smaller than the sum of its proper divisors (150190758).

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

128734902 is a wasteful number, since it uses less digits than its factorization.

128734902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7151947 (or 7151944 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 128734902 is about 11346.1404010351. The cubic root of 128734902 is about 504.9310783960.

The spelling of 128734902 in words is "one hundred twenty-eight million, seven hundred thirty-four thousand, nine hundred two".