609002128 has 40 divisors (see below), whose sum is σ = 1368648512. Its totient is φ = 257102208.

The previous prime is 609002123. The next prime is 609002131. The reversal of 609002128 is 821200906.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 609002096 and 609002105.

It is not an unprimeable number, because it can be changed into a prime (609002123) 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, 33075 + ... + 48082.

Almost surely, 2^609002128 is an apocalyptic number.

It is an amenable number.

609002128 is an abundant number, since it is smaller than the sum of its proper divisors (759646384).

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

609002128 is a wasteful number, since it uses less digits than its factorization.

609002128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81239 (or 81233 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 609002128 is about 24677.9684739243. The cubic root of 609002128 is about 847.6299040642.

The spelling of 609002128 in words is "six hundred nine million, two thousand, one hundred twenty-eight".