2995721840 has 40 divisors (see below), whose sum is σ = 6971021088. Its totient is φ = 1197262080.

The previous prime is 2995721819. The next prime is 2995721843. The reversal of 2995721840 is 481275992.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2995721843) 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, 81605 + ... + 112475.

Almost surely, 2^2995721840 is an apocalyptic number.

2995721840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2995721840 is an abundant number, since it is smaller than the sum of its proper divisors (3975299248).

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

2995721840 is a wasteful number, since it uses less digits than its factorization.

2995721840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32097 (or 32091 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 2995721840 is about 54733.1877383366. The cubic root of 2995721840 is about 1441.5636692244.

The spelling of 2995721840 in words is "two billion, nine hundred ninety-five million, seven hundred twenty-one thousand, eight hundred forty".