2921620746 has 48 divisors (see below), whose sum is σ = 6510837312. Its totient is φ = 873195840.

The previous prime is 2921620733. The next prime is 2921620753. The reversal of 2921620746 is 6470261292.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

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, 25435 + ... + 80561.

It is an arithmetic number, because the mean of its divisors is an integer number (135642444).

Almost surely, 2^2921620746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2921620746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3255418656).

2921620746 is an abundant number, since it is smaller than the sum of its proper divisors (3589216566).

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

2921620746 is a wasteful number, since it uses less digits than its factorization.

2921620746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55227 (or 55216 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 2921620746 is about 54052.0188892145. The cubic root of 2921620746 is about 1429.5782977444.

The spelling of 2921620746 in words is "two billion, nine hundred twenty-one million, six hundred twenty thousand, seven hundred forty-six".