988978220 has 24 divisors (see below), whose sum is σ = 2127511008. Its totient is φ = 385942400.

The previous prime is 988978171. The next prime is 988978267. The reversal of 988978220 is 22879889.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602216 + ... + 603855.

It is an arithmetic number, because the mean of its divisors is an integer number (88646292).

Almost surely, 2^988978220 is an apocalyptic number.

It is an amenable number.

988978220 is an abundant number, since it is smaller than the sum of its proper divisors (1138532788).

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

988978220 is a wasteful number, since it uses less digits than its factorization.

988978220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206121 (or 1206119 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 988978220 is about 31448.0241032724. The cubic root of 988978220 is about 996.3124923344.

The spelling of 988978220 in words is "nine hundred eighty-eight million, nine hundred seventy-eight thousand, two hundred twenty".