978428605 has 32 divisors (see below), whose sum is σ = 1465712640. Its totient is φ = 609145920.

The previous prime is 978428587. The next prime is 978428611. The reversal of 978428605 is 506824879.

It is not a de Polignac number, because 978428605 - 2⁵ = 978428573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491422 + ... + 493408.

It is an arithmetic number, because the mean of its divisors is an integer number (45803520).

Almost surely, 2^978428605 is an apocalyptic number.

It is an amenable number.

978428605 is a deficient number, since it is larger than the sum of its proper divisors (487284035).

978428605 is a wasteful number, since it uses less digits than its factorization.

978428605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 978428605 is about 31279.8434299151. The cubic root of 978428605 is about 992.7572035473.

The spelling of 978428605 in words is "nine hundred seventy-eight million, four hundred twenty-eight thousand, six hundred five".