978726241 has 4 divisors (see below), whose sum is σ = 979340692. Its totient is φ = 978111792.

The previous prime is 978726239. The next prime is 978726253. The reversal of 978726241 is 142627879.

978726241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 606390625 + 372335616 = 24625^2 + 19296^2 .

It is a cyclic number.

It is not a de Polignac number, because 978726241 - 2¹ = 978726239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 978726191 and 978726200.

It is not an unprimeable number, because it can be changed into a prime (978726041) 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, 304830 + ... + 308023.

It is an arithmetic number, because the mean of its divisors is an integer number (244835173).

Almost surely, 2^978726241 is an apocalyptic number.

It is an amenable number.

978726241 is a deficient number, since it is larger than the sum of its proper divisors (614451).

978726241 is a wasteful number, since it uses less digits than its factorization.

978726241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614450.

The product of its digits is 338688, while the sum is 46.

The square root of 978726241 is about 31284.6007006642. The cubic root of 978726241 is about 992.8578582519.

The spelling of 978726241 in words is "nine hundred seventy-eight million, seven hundred twenty-six thousand, two hundred forty-one".