3251428605 has 48 divisors (see below), whose sum is σ = 5695191216. Its totient is φ = 1715927040.

The previous prime is 3251428591. The next prime is 3251428633. The reversal of 3251428605 is 5068241523.

3251428605 is a `hidden beast` number, since 3 + 2 + 5 + 1 + 42 + 8 + 605 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 236759769 + 3014668836 = 15387^2 + 54906^2 .

It is not a de Polignac number, because 3251428605 - 2¹¹ = 3251426557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3251428605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1875319 + ... + 1877051.

It is an arithmetic number, because the mean of its divisors is an integer number (118649817).

Almost surely, 2^3251428605 is an apocalyptic number.

It is an amenable number.

3251428605 is a deficient number, since it is larger than the sum of its proper divisors (2443762611).

3251428605 is a wasteful number, since it uses less digits than its factorization.

3251428605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 3251428605 is about 57021.2995730543. The cubic root of 3251428605 is about 1481.4650401896.

The spelling of 3251428605 in words is "three billion, two hundred fifty-one million, four hundred twenty-eight thousand, six hundred five".