3256531500 has 48 divisors (see below), whose sum is σ = 9483024096. Its totient is φ = 868408000.

The previous prime is 3256531483. The next prime is 3256531507. The reversal of 3256531500 is 51356523.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (3256531507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084011 + ... + 1087010.

It is an arithmetic number, because the mean of its divisors is an integer number (197563002).

Almost surely, 2^3256531500 is an apocalyptic number.

3256531500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3256531500 is an abundant number, since it is smaller than the sum of its proper divisors (6226492596).

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

3256531500 is a wasteful number, since it uses less digits than its factorization.

3256531500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171043 (or 2171031 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 3256531500 is about 57066.0275470441. The cubic root of 3256531500 is about 1482.2396544762.

The spelling of 3256531500 in words is "three billion, two hundred fifty-six million, five hundred thirty-one thousand, five hundred".