978428594 has 16 divisors (see below), whose sum is σ = 1724224320. Its totient is φ = 410529360.

The previous prime is 978428587. The next prime is 978428611. The reversal of 978428594 is 495824879.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1710254 + ... + 1710825.

It is an arithmetic number, because the mean of its divisors is an integer number (107764020).

Almost surely, 2^978428594 is an apocalyptic number.

978428594 is a deficient number, since it is larger than the sum of its proper divisors (745795726).

978428594 is a wasteful number, since it uses less digits than its factorization.

978428594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421105.

The product of its digits is 5806080, while the sum is 56.

The square root of 978428594 is about 31279.8432540830. The cubic root of 978428594 is about 992.7571998270.

The spelling of 978428594 in words is "nine hundred seventy-eight million, four hundred twenty-eight thousand, five hundred ninety-four".