988357220 has 48 divisors (see below), whose sum is σ = 2227801968. Its totient is φ = 366981120.

The previous prime is 988357211. The next prime is 988357241. The reversal of 988357220 is 22753889.

It can be written as a sum of positive squares in 8 ways, for example, as 36264484 + 952092736 = 6022^2 + 30856^2 .

It is a super-2 number, since 2×988357220² = 1953699988652256800, which contains 22 as substring.

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, 4910 + ... + 44730.

It is an arithmetic number, because the mean of its divisors is an integer number (46412541).

Almost surely, 2^988357220 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 988357220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113900984).

988357220 is an abundant number, since it is smaller than the sum of its proper divisors (1239444748).

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

988357220 is a wasteful number, since it uses less digits than its factorization.

988357220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39920 (or 39918 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 988357220 is about 31438.1491185470. The cubic root of 988357220 is about 996.1039135573.

The spelling of 988357220 in words is "nine hundred eighty-eight million, three hundred fifty-seven thousand, two hundred twenty".