2115453340 has 96 divisors (see below), whose sum is σ = 5964747264. Its totient is φ = 608636160.

The previous prime is 2115453337. The next prime is 2115453397. The reversal of 2115453340 is 433545112.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2115453299 and 2115453308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32814 + ... + 72853.

It is an arithmetic number, because the mean of its divisors is an integer number (62132784).

Almost surely, 2^2115453340 is an apocalyptic number.

2115453340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115453340 is an abundant number, since it is smaller than the sum of its proper divisors (3849293924).

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

2115453340 is a wasteful number, since it uses less digits than its factorization.

2115453340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105707 (or 105705 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2115453340 is about 45994.0576596586. The cubic root of 2115453340 is about 1283.7126382415.

Adding to 2115453340 its reverse (433545112), we get a palindrome (2548998452).

The spelling of 2115453340 in words is "two billion, one hundred fifteen million, four hundred fifty-three thousand, three hundred forty".