2215654040 has 16 divisors (see below), whose sum is σ = 4985221680. Its totient is φ = 886261600.

The previous prime is 2215654039. The next prime is 2215654073. The reversal of 2215654040 is 404565122.

It is a junction number, because it is equal to n+sod(n) for n = 2215653994 and 2215654012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27695636 + ... + 27695715.

It is an arithmetic number, because the mean of its divisors is an integer number (311576355).

Almost surely, 2^2215654040 is an apocalyptic number.

2215654040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215654040 is an abundant number, since it is smaller than the sum of its proper divisors (2769567640).

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

2215654040 is a wasteful number, since it uses less digits than its factorization.

2215654040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55391362 (or 55391358 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2215654040 is about 47070.7344323413. The cubic root of 2215654040 is about 1303.6689334181.

The spelling of 2215654040 in words is "two billion, two hundred fifteen million, six hundred fifty-four thousand, forty".