928280988 has 144 divisors (see below), whose sum is σ = 2593334016. Its totient is φ = 278691840.

The previous prime is 928280987. The next prime is 928280993. The reversal of 928280988 is 889082829.

It is a super-2 number, since 2×928280988² = 1723411185364512288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (928280987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2143620 + ... + 2144052.

It is an arithmetic number, because the mean of its divisors is an integer number (18009264).

Almost surely, 2^928280988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 928280988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296667008).

928280988 is an abundant number, since it is smaller than the sum of its proper divisors (1665053028).

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

928280988 is a wasteful number, since it uses less digits than its factorization.

928280988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The square root of 928280988 is about 30467.7040158920. The cubic root of 928280988 is about 975.4982289888.

The spelling of 928280988 in words is "nine hundred twenty-eight million, two hundred eighty thousand, nine hundred eighty-eight".