9728654401 has 8 divisors (see below), whose sum is σ = 9915108264. Its totient is φ = 9542307840.

The previous prime is 9728654393. The next prime is 9728654423. The reversal of 9728654401 is 1044568279.

It can be written as a sum of positive squares in 4 ways, for example, as 5818028176 + 3910626225 = 76276^2 + 62535^2 .

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 9728654401 - 2³ = 9728654393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9728654101) 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, 169921 + ... + 219841.

It is an arithmetic number, because the mean of its divisors is an integer number (1239388533).

Almost surely, 2^9728654401 is an apocalyptic number.

It is an amenable number.

9728654401 is a deficient number, since it is larger than the sum of its proper divisors (186453863).

9728654401 is a wasteful number, since it uses less digits than its factorization.

9728654401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53651.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 9728654401 is about 98633.9414248462. The cubic root of 9728654401 is about 2134.7691853579.

The spelling of 9728654401 in words is "nine billion, seven hundred twenty-eight million, six hundred fifty-four thousand, four hundred one".