2023902721 has 8 divisors (see below), whose sum is σ = 2144759400. Its totient is φ = 1906450560.

The previous prime is 2023902707. The next prime is 2023902757. The reversal of 2023902721 is 1272093202.

It can be written as a sum of positive squares in 4 ways, for example, as 8880400 + 2015022321 = 2980^2 + 44889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2023902721 - 2¹⁹ = 2023378433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2023902721.

It is not an unprimeable number, because it can be changed into a prime (2023902791) 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, 849906 + ... + 852283.

It is an arithmetic number, because the mean of its divisors is an integer number (268094925).

Almost surely, 2^2023902721 is an apocalyptic number.

It is an amenable number.

2023902721 is a deficient number, since it is larger than the sum of its proper divisors (120856679).

2023902721 is a wasteful number, since it uses less digits than its factorization.

2023902721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702259.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2023902721 is about 44987.8063590569. The cubic root of 2023902721 is about 1264.9204428504.

Adding to 2023902721 its reverse (1272093202), we get a palindrome (3295995923).

The spelling of 2023902721 in words is "two billion, twenty-three million, nine hundred two thousand, seven hundred twenty-one".