2215155340 has 24 divisors (see below), whose sum is σ = 4721259312. Its totient is φ = 872836800.

The previous prime is 2215155307. The next prime is 2215155347. The reversal of 2215155340 is 435515122.

It is a junction number, because it is equal to n+sod(n) for n = 2215155299 and 2215155308.

It is not an unprimeable number, because it can be changed into a prime (2215155347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825211 + ... + 827890.

It is an arithmetic number, because the mean of its divisors is an integer number (196719138).

Almost surely, 2^2215155340 is an apocalyptic number.

2215155340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215155340 is an abundant number, since it is smaller than the sum of its proper divisors (2506103972).

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

2215155340 is a wasteful number, since it uses less digits than its factorization.

2215155340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653177 (or 1653175 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2215155340 is about 47065.4367875196. The cubic root of 2215155340 is about 1303.5711160288.

The spelling of 2215155340 in words is "two billion, two hundred fifteen million, one hundred fifty-five thousand, three hundred forty".