2133273520 has 80 divisors (see below), whose sum is σ = 5724687168. Its totient is φ = 724147200.

The previous prime is 2133273497. The next prime is 2133273533. The reversal of 2133273520 is 253723312.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2133273520² = 9101711822266380800, which contains 22 as substring.

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

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, 37702 + ... + 75418.

Almost surely, 2^2133273520 is an apocalyptic number.

2133273520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2133273520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2862343584).

2133273520 is an abundant number, since it is smaller than the sum of its proper divisors (3591413648).

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

2133273520 is a wasteful number, since it uses less digits than its factorization.

2133273520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37838 (or 37832 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 2133273520 is about 46187.3740323045. The cubic root of 2133273520 is about 1287.3071482912.

Adding to 2133273520 its reverse (253723312), we get a palindrome (2386996832).

It can be divided in two parts, 2133 and 273520, that added together give a triangular number (275653 = T₇₄₂).

The spelling of 2133273520 in words is "two billion, one hundred thirty-three million, two hundred seventy-three thousand, five hundred twenty".