2641021280 has 96 divisors (see below), whose sum is σ = 6585636960. Its totient is φ = 998092800.

The previous prime is 2641021241. The next prime is 2641021289. The reversal of 2641021280 is 821201462.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2641021289) 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, 1388330 + ... + 1390230.

It is an arithmetic number, because the mean of its divisors is an integer number (68600385).

Almost surely, 2^2641021280 is an apocalyptic number.

2641021280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2641021280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3292818480).

2641021280 is an abundant number, since it is smaller than the sum of its proper divisors (3944615680).

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

2641021280 is a wasteful number, since it uses less digits than its factorization.

2641021280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392 (or 2384 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 2641021280 is about 51390.8676712118. The cubic root of 2641021280 is about 1382.2628421430.

The spelling of 2641021280 in words is "two billion, six hundred forty-one million, twenty-one thousand, two hundred eighty".