3261634420 has 48 divisors (see below), whose sum is σ = 7511325696. Its totient is φ = 1179824000.

The previous prime is 3261634417. The next prime is 3261634421. The reversal of 3261634420 is 244361623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261634421) 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, 3210 + ... + 80830.

It is an arithmetic number, because the mean of its divisors is an integer number (156485952).

Almost surely, 2^3261634420 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 3261634420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3755662848).

3261634420 is an abundant number, since it is smaller than the sum of its proper divisors (4249691276).

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

3261634420 is a wasteful number, since it uses less digits than its factorization.

3261634420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77832 (or 77830 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 3261634420 is about 57110.7207098632. The cubic root of 3261634420 is about 1483.0134637745.

The spelling of 3261634420 in words is "three billion, two hundred sixty-one million, six hundred thirty-four thousand, four hundred twenty".