2780850450 has 144 divisors (see below), whose sum is σ = 8445129120. Its totient is φ = 602138880.

The previous prime is 2780850437. The next prime is 2780850487. The reversal of 2780850450 is 540580872.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2780850399 and 2780850408.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 129694 + ... + 149606.

It is an arithmetic number, because the mean of its divisors is an integer number (58646730).

Almost surely, 2^2780850450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2780850450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4222564560).

2780850450 is an abundant number, since it is smaller than the sum of its proper divisors (5664278670).

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

2780850450 is a wasteful number, since it uses less digits than its factorization.

2780850450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19961 (or 19949 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 2780850450 is about 52733.7695409687. The cubic root of 2780850450 is about 1406.2392362633.

The spelling of 2780850450 in words is "two billion, seven hundred eighty million, eight hundred fifty thousand, four hundred fifty".