2757326640 has 80 divisors (see below), whose sum is σ = 8575784448. Its totient is φ = 732872448.

The previous prime is 2757326609. The next prime is 2757326653. The reversal of 2757326640 is 466237572.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2757326592 and 2757326601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54969 + ... + 92391.

Almost surely, 2^2757326640 is an apocalyptic number.

2757326640 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 2757326640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4287892224).

2757326640 is an abundant number, since it is smaller than the sum of its proper divisors (5818457808).

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

2757326640 is a wasteful number, since it uses less digits than its factorization.

2757326640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37746 (or 37740 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 2757326640 is about 52510.2527131607. The cubic root of 2757326640 is about 1402.2627761496.

The spelling of 2757326640 in words is "two billion, seven hundred fifty-seven million, three hundred twenty-six thousand, six hundred forty".