2821545580 has 48 divisors (see below), whose sum is σ = 6776340480. Its totient is φ = 966725568.

The previous prime is 2821545563. The next prime is 2821545583. The reversal of 2821545580 is 855451282.

2821545580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2821545580² = 15922238920035072800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2821545583) 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, 226761 + ... + 238879.

It is an arithmetic number, because the mean of its divisors is an integer number (141173760).

Almost surely, 2^2821545580 is an apocalyptic number.

2821545580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2821545580 is an abundant number, since it is smaller than the sum of its proper divisors (3954794900).

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

2821545580 is a wasteful number, since it uses less digits than its factorization.

2821545580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13798 (or 13796 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 40.

The square root of 2821545580 is about 53118.2226735797. Note that the first 3 decimals coincide. The cubic root of 2821545580 is about 1413.0657068365.

The spelling of 2821545580 in words is "two billion, eight hundred twenty-one million, five hundred forty-five thousand, five hundred eighty".