2220688040 has 32 divisors (see below), whose sum is σ = 4998343680. Its totient is φ = 887956032.

The previous prime is 2220688037. The next prime is 2220688159. The reversal of 2220688040 is 408860222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2220687988 and 2220688006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125417 + ... + 142023.

It is an arithmetic number, because the mean of its divisors is an integer number (156198240).

Almost surely, 2^2220688040 is an apocalyptic number.

2220688040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220688040 is an abundant number, since it is smaller than the sum of its proper divisors (2777655640).

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

2220688040 is a wasteful number, since it uses less digits than its factorization.

2220688040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19961 (or 19957 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 2220688040 is about 47124.1768097863. The cubic root of 2220688040 is about 1304.6555052376.

The spelling of 2220688040 in words is "two billion, two hundred twenty million, six hundred eighty-eight thousand, forty".