2220815544 has 16 divisors (see below), whose sum is σ = 5552038920. Its totient is φ = 740271840.

The previous prime is 2220815543. The next prime is 2220815557. The reversal of 2220815544 is 4455180222.

2220815544 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220815543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46266967 + ... + 46267014.

Almost surely, 2^2220815544 is an apocalyptic number.

2220815544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2220815544 is an abundant number, since it is smaller than the sum of its proper divisors (3331223376).

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

2220815544 is a wasteful number, since it uses less digits than its factorization.

2220815544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92533990 (or 92533986 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 2220815544 is about 47125.5296415860. The cubic root of 2220815544 is about 1304.6804743176.

Adding to 2220815544 its reverse (4455180222), we get a palindrome (6675995766).

The spelling of 2220815544 in words is "two billion, two hundred twenty million, eight hundred fifteen thousand, five hundred forty-four".