5428721737 has 8 divisors (see below), whose sum is σ = 5443826472. Its totient is φ = 5413632000.

The previous prime is 5428721693. The next prime is 5428721777. The reversal of 5428721737 is 7371278245.

It can be written as a sum of positive squares in 4 ways, for example, as 3507126841 + 1921594896 = 59221^2 + 43836^2 .

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 5428721737 - 2¹⁹ = 5428197449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5428721777) 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, 1277937 + ... + 1282177.

It is an arithmetic number, because the mean of its divisors is an integer number (680478309).

Almost surely, 2^5428721737 is an apocalyptic number.

It is an amenable number.

5428721737 is a deficient number, since it is larger than the sum of its proper divisors (15104735).

5428721737 is a wasteful number, since it uses less digits than its factorization.

5428721737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7499.

The product of its digits is 658560, while the sum is 46.

The square root of 5428721737 is about 73679.8597786396. The cubic root of 5428721737 is about 1757.5156210659.

The spelling of 5428721737 in words is "five billion, four hundred twenty-eight million, seven hundred twenty-one thousand, seven hundred thirty-seven".