978928926 has 8 divisors (see below), whose sum is σ = 1957857864. Its totient is φ = 326309640.

The previous prime is 978928919. The next prime is 978928939. The reversal of 978928926 is 629829879.

It is a happy number.

978928926 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

978928926 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 978928926.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81577405 + ... + 81577416.

It is an arithmetic number, because the mean of its divisors is an integer number (244732233).

Almost surely, 2^978928926 is an apocalyptic number.

978928926 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978928926 is a wasteful number, since it uses less digits than its factorization.

978928926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163154826.

The product of its digits is 7838208, while the sum is 60.

The square root of 978928926 is about 31287.8399062639. The cubic root of 978928926 is about 992.9263906963.

The spelling of 978928926 in words is "nine hundred seventy-eight million, nine hundred twenty-eight thousand, nine hundred twenty-six".