609402528 has 120 divisors (see below), whose sum is σ = 2048330592. Its totient is φ = 174109824.

The previous prime is 609402473. The next prime is 609402529. The reversal of 609402528 is 825204906.

It is a happy number.

609402528 is a `hidden beast` number, since 609 + 4 + 0 + 25 + 28 = 666.

It is a super-2 number, since 2×609402528² = 742742882265581568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 609402492 and 609402501.

It is not an unprimeable number, because it can be changed into a prime (609402529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1351 + ... + 34937.

Almost surely, 2^609402528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609402528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1024165296).

609402528 is an abundant number, since it is smaller than the sum of its proper divisors (1438928064).

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

609402528 is a wasteful number, since it uses less digits than its factorization.

609402528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33616 (or 33599 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 609402528 is about 24686.0796401535. The cubic root of 609402528 is about 847.8156268203.

The spelling of 609402528 in words is "six hundred nine million, four hundred two thousand, five hundred twenty-eight".