978725532 has 48 divisors (see below), whose sum is σ = 2385976320. Its totient is φ = 311665728.

The previous prime is 978725519. The next prime is 978725543. The reversal of 978725532 is 235527879.

It is a happy number.

978725532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285058 + ... + 288470.

It is an arithmetic number, because the mean of its divisors is an integer number (49707840).

Almost surely, 2^978725532 is an apocalyptic number.

978725532 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

978725532 is an abundant number, since it is smaller than the sum of its proper divisors (1407250788).

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

978725532 is a wasteful number, since it uses less digits than its factorization.

978725532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482 (or 4480 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 48.

The square root of 978725532 is about 31284.5893692086. The cubic root of 978725532 is about 992.8576185062.

The spelling of 978725532 in words is "nine hundred seventy-eight million, seven hundred twenty-five thousand, five hundred thirty-two".