2133450240 has 80 divisors (see below), whose sum is σ = 6820398288. Its totient is φ = 568918016.

The previous prime is 2133450233. The next prime is 2133450269. The reversal of 2133450240 is 420543312.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2133450240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131217 + ... + 146576.

Almost surely, 2^2133450240 is an apocalyptic number.

2133450240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133450240 is an abundant number, since it is smaller than the sum of its proper divisors (4686948048).

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

2133450240 is an equidigital number, since it uses as much as digits as its factorization.

2133450240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277819 (or 277803 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2133450240 is about 46189.2870696225. The cubic root of 2133450240 is about 1287.3426940750.

Adding to 2133450240 its reverse (420543312), we get a palindrome (2553993552).

The spelling of 2133450240 in words is "two billion, one hundred thirty-three million, four hundred fifty thousand, two hundred forty".