2921960140 has 24 divisors (see below), whose sum is σ = 6693945552. Its totient is φ = 1062530880.

The previous prime is 2921960131. The next prime is 2921960143. The reversal of 2921960140 is 410691292.

It is a junction number, because it is equal to n+sod(n) for n = 2921960096 and 2921960105.

It is not an unprimeable number, because it can be changed into a prime (2921960143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6640599 + ... + 6641038.

It is an arithmetic number, because the mean of its divisors is an integer number (278914398).

Almost surely, 2^2921960140 is an apocalyptic number.

2921960140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2921960140 is an abundant number, since it is smaller than the sum of its proper divisors (3771985412).

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

2921960140 is a wasteful number, since it uses less digits than its factorization.

2921960140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13281657 (or 13281655 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 2921960140 is about 54055.1583107477. The cubic root of 2921960140 is about 1429.6336518957.

The spelling of 2921960140 in words is "two billion, nine hundred twenty-one million, nine hundred sixty thousand, one hundred forty".