2808226840 has 32 divisors (see below), whose sum is σ = 6360930000. Its totient is φ = 1115749504.

The previous prime is 2808226823. The next prime is 2808226859. The reversal of 2808226840 is 486228082.

It is a super-2 number, since 2×2808226840² = 15772275969792771200, which contains 22 as substring.

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 = 2808226793 and 2808226802.

It is a congruent number.

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, 229630 + ... + 241549.

Almost surely, 2^2808226840 is an apocalyptic number.

2808226840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2808226840 is an abundant number, since it is smaller than the sum of its proper divisors (3552703160).

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

2808226840 is a wasteful number, since it uses less digits than its factorization.

2808226840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471339 (or 471335 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 2808226840 is about 52992.7055357622. The cubic root of 2808226840 is about 1410.8388014073.

The spelling of 2808226840 in words is "two billion, eight hundred eight million, two hundred twenty-six thousand, eight hundred forty".