2921079780 has 192 divisors, whose sum is σ = 9436815360. Its totient is φ = 749347200.

The previous prime is 2921079767. The next prime is 2921079797. The reversal of 2921079780 is 879701292.

It is a super-2 number, since 2×2921079780² = 17065414162249696800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3531727 + ... + 3532553.

It is an arithmetic number, because the mean of its divisors is an integer number (49150080).

Almost surely, 2^2921079780 is an apocalyptic number.

2921079780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2921079780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4718407680).

2921079780 is an abundant number, since it is smaller than the sum of its proper divisors (6515735580).

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

2921079780 is a wasteful number, since it uses less digits than its factorization.

2921079780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 2921079780 is about 54047.0145336447. The cubic root of 2921079780 is about 1429.4900589371.

The spelling of 2921079780 in words is "two billion, nine hundred twenty-one million, seventy-nine thousand, seven hundred eighty".