978211232 has 12 divisors (see below), whose sum is σ = 1925853426. Its totient is φ = 489105600.

The previous prime is 978211211. The next prime is 978211243. The reversal of 978211232 is 232112879.

It can be written as a sum of positive squares in only one way, i.e., 790959376 + 187251856 = 28124^2 + 13684^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 978211192 and 978211201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15284519 + ... + 15284582.

Almost surely, 2^978211232 is an apocalyptic number.

It is an amenable number.

978211232 is a deficient number, since it is larger than the sum of its proper divisors (947642194).

978211232 is a wasteful number, since it uses less digits than its factorization.

978211232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30569111 (or 30569103 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 978211232 is about 31276.3685871618. The cubic root of 978211232 is about 992.6836793292.

The spelling of 978211232 in words is "nine hundred seventy-eight million, two hundred eleven thousand, two hundred thirty-two".