2724433921 has 16 divisors (see below), whose sum is σ = 3131735040. Its totient is φ = 2344003920.

The previous prime is 2724433903. The next prime is 2724433961. The reversal of 2724433921 is 1293344272.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2724433921 - 2¹⁹ = 2723909633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2724433961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216036 + ... + 228298.

It is an arithmetic number, because the mean of its divisors is an integer number (195733440).

Almost surely, 2^2724433921 is an apocalyptic number.

It is an amenable number.

2724433921 is a deficient number, since it is larger than the sum of its proper divisors (407301119).

2724433921 is a wasteful number, since it uses less digits than its factorization.

2724433921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13356.

The product of its digits is 72576, while the sum is 37.

The square root of 2724433921 is about 52196.1102094783. The cubic root of 2724433921 is about 1396.6644950028.

It can be divided in two parts, 2724 and 433921, that added together give a triangular number (436645 = T₉₃₄).

The spelling of 2724433921 in words is "two billion, seven hundred twenty-four million, four hundred thirty-three thousand, nine hundred twenty-one".