998777752 has 32 divisors (see below), whose sum is σ = 2149862400. Its totient is φ = 426122784.

The previous prime is 998777723. The next prime is 998777833. The reversal of 998777752 is 257777899.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 10.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 27502 + ... + 52477.

It is an arithmetic number, because the mean of its divisors is an integer number (67183200).

Almost surely, 2^998777752 is an apocalyptic number.

It is an amenable number.

998777752 is an abundant number, since it is smaller than the sum of its proper divisors (1151084648).

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

998777752 is a wasteful number, since it uses less digits than its factorization.

998777752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80215 (or 80211 counting only the distinct ones).

The product of its digits is 15558480, while the sum is 61.

The square root of 998777752 is about 31603.4452552249. The cubic root of 998777752 is about 999.5924178994.

The spelling of 998777752 in words is "nine hundred ninety-eight million, seven hundred seventy-seven thousand, seven hundred fifty-two".