978533740 has 12 divisors (see below), whose sum is σ = 2054920896. Its totient is φ = 391413488.

The previous prime is 978533663. The next prime is 978533761. The reversal of 978533740 is 47335879.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 24463324 + ... + 24463363.

It is an arithmetic number, because the mean of its divisors is an integer number (171243408).

Almost surely, 2^978533740 is an apocalyptic number.

It is an amenable number.

978533740 is an abundant number, since it is smaller than the sum of its proper divisors (1076387156).

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

978533740 is a wasteful number, since it uses less digits than its factorization.

978533740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48926696 (or 48926694 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 978533740 is about 31281.5239398595. The cubic root of 978533740 is about 992.7927604903.

The spelling of 978533740 in words is "nine hundred seventy-eight million, five hundred thirty-three thousand, seven hundred forty".