2820621450 has 48 divisors (see below), whose sum is σ = 7090992576. Its totient is φ = 741859200.

The previous prime is 2820621443. The next prime is 2820621457. The reversal of 2820621450 is 541260282.

It is an interprime number because it is at equal distance from previous prime (2820621443) and next prime (2820621457).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2820621457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117846 + ... + 139745.

It is an arithmetic number, because the mean of its divisors is an integer number (147729012).

Almost surely, 2^2820621450 is an apocalyptic number.

2820621450 is an abundant number, since it is smaller than the sum of its proper divisors (4270371126).

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

2820621450 is a wasteful number, since it uses less digits than its factorization.

2820621450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257679 (or 257674 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2820621450 is about 53109.5231573397. The cubic root of 2820621450 is about 1412.9114179939.

The spelling of 2820621450 in words is "two billion, eight hundred twenty million, six hundred twenty-one thousand, four hundred fifty".