988172280 has 192 divisors, whose sum is σ = 3325289760. Its totient is φ = 254352384.

The previous prime is 988172261. The next prime is 988172323. The reversal of 988172280 is 82271889.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1277974 + ... + 1278746.

Almost surely, 2^988172280 is an apocalyptic number.

988172280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988172280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1662644880).

988172280 is an abundant number, since it is smaller than the sum of its proper divisors (2337117480).

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

988172280 is a wasteful number, since it uses less digits than its factorization.

988172280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 988172280 is about 31435.2076500220. The cubic root of 988172280 is about 996.0417798316.

The spelling of 988172280 in words is "nine hundred eighty-eight million, one hundred seventy-two thousand, two hundred eighty".