2123720976 has 160 divisors (see below), whose sum is σ = 6081832960. Its totient is φ = 634563072.

The previous prime is 2123720959. The next prime is 2123720987. The reversal of 2123720976 is 6790273212.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3302511 + ... + 3303153.

It is an arithmetic number, because the mean of its divisors is an integer number (38011456).

Almost surely, 2^2123720976 is an apocalyptic number.

2123720976 is a gapful number since it is divisible by the number (26) 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 2123720976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3040916480).

2123720976 is an abundant number, since it is smaller than the sum of its proper divisors (3958111984).

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

2123720976 is a wasteful number, since it uses less digits than its factorization.

2123720976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 2123720976 is about 46083.8472352298. The cubic root of 2123720976 is about 1285.3828038854.

The spelling of 2123720976 in words is "two billion, one hundred twenty-three million, seven hundred twenty thousand, nine hundred seventy-six".