3257532740 has 144 divisors (see below), whose sum is σ = 8716305024. Its totient is φ = 1014182400.

The previous prime is 3257532739. The next prime is 3257532743. The reversal of 3257532740 is 472357523.

It is a happy number.

It is a super-2 number, since 2×3257532740² = 21223039104343815200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3257532694 and 3257532703.

It is not an unprimeable number, because it can be changed into a prime (3257532743) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3697100 + ... + 3697980.

It is an arithmetic number, because the mean of its divisors is an integer number (60529896).

Almost surely, 2^3257532740 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 3257532740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4358152512).

3257532740 is an abundant number, since it is smaller than the sum of its proper divisors (5458772284).

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

3257532740 is an equidigital number, since it uses as much as digits as its factorization.

3257532740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 38.

The square root of 3257532740 is about 57074.7995178257. The cubic root of 3257532740 is about 1482.3915467130.

The spelling of 3257532740 in words is "three billion, two hundred fifty-seven million, five hundred thirty-two thousand, seven hundred forty".