3209085428 has 12 divisors (see below), whose sum is σ = 5616314340. Its totient is φ = 1604424192.

The previous prime is 3209085421. The next prime is 3209085431. The reversal of 3209085428 is 8245809023.

It can be written as a sum of positive squares in 2 ways, for example, as 1976513764 + 1232571664 = 44458^2 + 35108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3209085421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64550 + ... + 102882.

It is an arithmetic number, because the mean of its divisors is an integer number (468026195).

Almost surely, 2^3209085428 is an apocalyptic number.

It is an amenable number.

3209085428 is a deficient number, since it is larger than the sum of its proper divisors (2407228912).

3209085428 is a wasteful number, since it uses less digits than its factorization.

3209085428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59266 (or 59264 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 3209085428 is about 56648.7901724300. The cubic root of 3209085428 is about 1475.0059067847.

The spelling of 3209085428 in words is "three billion, two hundred nine million, eighty-five thousand, four hundred twenty-eight".