3261725730 has 24 divisors (see below), whose sum is σ = 8480487132. Its totient is φ = 869793504.

The previous prime is 3261725699. The next prime is 3261725743. The reversal of 3261725730 is 375271623.

3261725730 is a `hidden beast` number, since 3 + 2 + 617 + 2 + 5 + 7 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3190103361 + 71622369 = 56481^2 + 8463^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18120609 + ... + 18120788.

Almost surely, 2^3261725730 is an apocalyptic number.

3261725730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3261725730 is an abundant number, since it is smaller than the sum of its proper divisors (5218761402).

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

3261725730 is a wasteful number, since it uses less digits than its factorization.

3261725730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36241410 (or 36241407 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 3261725730 is about 57111.5201163478. The cubic root of 3261725730 is about 1483.0273027152.

The spelling of 3261725730 in words is "three billion, two hundred sixty-one million, seven hundred twenty-five thousand, seven hundred thirty".