2176691040 has 144 divisors (see below), whose sum is σ = 7667726976. Its totient is φ = 561715200.

The previous prime is 2176691039. The next prime is 2176691051. The reversal of 2176691040 is 401966712.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2176690986 and 2176691004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20260 + ... + 69020.

It is an arithmetic number, because the mean of its divisors is an integer number (53248104).

Almost surely, 2^2176691040 is an apocalyptic number.

2176691040 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 2176691040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3833863488).

2176691040 is an abundant number, since it is smaller than the sum of its proper divisors (5491035936).

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

2176691040 is a wasteful number, since it uses less digits than its factorization.

2176691040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48813 (or 48802 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2176691040 is about 46655.0215946794. The cubic root of 2176691040 is about 1295.9818813196.

The spelling of 2176691040 in words is "two billion, one hundred seventy-six million, six hundred ninety-one thousand, forty".