2209924840 has 32 divisors (see below), whose sum is σ = 4974187680. Its totient is φ = 883639872.

The previous prime is 2209924837. The next prime is 2209924853. The reversal of 2209924840 is 484299022.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2209924793 and 2209924802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117787 + ... + 135253.

It is an arithmetic number, because the mean of its divisors is an integer number (155443365).

Almost surely, 2^2209924840 is an apocalyptic number.

2209924840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2209924840 is an abundant number, since it is smaller than the sum of its proper divisors (2764262840).

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

2209924840 is a wasteful number, since it uses less digits than its factorization.

2209924840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20641 (or 20637 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 2209924840 is about 47009.8376938274. The cubic root of 2209924840 is about 1302.5442952898.

The spelling of 2209924840 in words is "two billion, two hundred nine million, nine hundred twenty-four thousand, eight hundred forty".