978430 has 8 divisors (see below), whose sum is σ = 1761192. Its totient is φ = 391368.

The previous prime is 978427. The next prime is 978449. The reversal of 978430 is 34879.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 978392 and 978401.

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, 48912 + ... + 48931.

It is an arithmetic number, because the mean of its divisors is an integer number (220149).

2⁹⁷⁸⁴³⁰ is an apocalyptic number.

978430 is a deficient number, since it is larger than the sum of its proper divisors (782762).

978430 is a wasteful number, since it uses less digits than its factorization.

978430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97850.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 978430 is about 989.1562060666. The cubic root of 978430 is about 99.2757675357.

The spelling of 978430 in words is "nine hundred seventy-eight thousand, four hundred thirty".