2115144020 has 48 divisors (see below), whose sum is σ = 4893630336. Its totient is φ = 761520000.

The previous prime is 2115144001. The next prime is 2115144079. The reversal of 2115144020 is 204415112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2115143983 and 2115144001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25376 + ... + 69815.

It is an arithmetic number, because the mean of its divisors is an integer number (101950632).

Almost surely, 2^2115144020 is an apocalyptic number.

2115144020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115144020 is an abundant number, since it is smaller than the sum of its proper divisors (2778486316).

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

2115144020 is a wasteful number, since it uses less digits than its factorization.

2115144020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95312 (or 95310 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2115144020 is about 45990.6949284309. The cubic root of 2115144020 is about 1283.6500673588.

Adding to 2115144020 its reverse (204415112), we get a palindrome (2319559132).

The spelling of 2115144020 in words is "two billion, one hundred fifteen million, one hundred forty-four thousand, twenty".