428080978 has 32 divisors (see below), whose sum is σ = 739380096. Its totient is φ = 184128768.

The previous prime is 428080969. The next prime is 428080993. The reversal of 428080978 is 879080824.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40825 + ... + 50227.

It is an arithmetic number, because the mean of its divisors is an integer number (23105628).

Almost surely, 2^428080978 is an apocalyptic number.

428080978 is a deficient number, since it is larger than the sum of its proper divisors (311299118).

428080978 is a wasteful number, since it uses less digits than its factorization.

428080978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9538.

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 428080978 is about 20690.1178826995. The cubic root of 428080978 is about 753.6597293866.

It can be divided in two parts, 4280 and 80978, that added together give a palindrome (85258).

The spelling of 428080978 in words is "four hundred twenty-eight million, eighty thousand, nine hundred seventy-eight".