2720450923 has 4 divisors (see below), whose sum is σ = 2757717448. Its totient is φ = 2683184400.

The previous prime is 2720450917. The next prime is 2720450927. The reversal of 2720450923 is 3290540272.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2720450923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2720450927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18633153 + ... + 18633298.

It is an arithmetic number, because the mean of its divisors is an integer number (689429362).

Almost surely, 2^2720450923 is an apocalyptic number.

2720450923 is a deficient number, since it is larger than the sum of its proper divisors (37266525).

2720450923 is an equidigital number, since it uses as much as digits as its factorization.

2720450923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37266524.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 2720450923 is about 52157.9420893885. The cubic root of 2720450923 is about 1395.9835431472.

The spelling of 2720450923 in words is "two billion, seven hundred twenty million, four hundred fifty thousand, nine hundred twenty-three".