2801621250 has 320 divisors, whose sum is σ = 8704713600. Its totient is φ = 663552000.

The previous prime is 2801621243. The next prime is 2801621257. The reversal of 2801621250 is 521261082.

It is a happy number.

2801621250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2801621243) and next prime (2801621257).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2801621257) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 10901122 + ... + 10901378.

It is an arithmetic number, because the mean of its divisors is an integer number (27202230).

Almost surely, 2^2801621250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2801621250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4352356800).

2801621250 is an abundant number, since it is smaller than the sum of its proper divisors (5903092350).

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

2801621250 is a wasteful number, since it uses less digits than its factorization.

2801621250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2801621250 is about 52930.3433769327. The cubic root of 2801621250 is about 1409.7317280464.

The spelling of 2801621250 in words is "two billion, eight hundred one million, six hundred twenty-one thousand, two hundred fifty".