978981432 has 64 divisors (see below), whose sum is σ = 2875340160. Its totient is φ = 273840000.

The previous prime is 978981389. The next prime is 978981439. The reversal of 978981432 is 234189879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978981439) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 139194 + ... + 146057.

It is an arithmetic number, because the mean of its divisors is an integer number (44927190).

Almost surely, 2^978981432 is an apocalyptic number.

It is an amenable number.

978981432 is an abundant number, since it is smaller than the sum of its proper divisors (1896358728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978981432 is a wasteful number, since it uses less digits than its factorization.

978981432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285284 (or 285280 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 978981432 is about 31288.6789749903. The cubic root of 978981432 is about 992.9441426358.

The spelling of 978981432 in words is "nine hundred seventy-eight million, nine hundred eighty-one thousand, four hundred thirty-two".