985137220 has 24 divisors (see below), whose sum is σ = 2135524608. Its totient is φ = 381343200.

The previous prime is 985137211. The next prime is 985137229. The reversal of 985137220 is 22731589.

It is an interprime number because it is at equal distance from previous prime (985137211) and next prime (985137229).

It is a self number, because there is not a number n which added to its sum of digits gives 985137220.

It is not an unprimeable number, because it can be changed into a prime (985137229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793846 + ... + 795085.

It is an arithmetic number, because the mean of its divisors is an integer number (88980192).

Almost surely, 2^985137220 is an apocalyptic number.

It is an amenable number.

985137220 is an abundant number, since it is smaller than the sum of its proper divisors (1150387388).

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

985137220 is a wasteful number, since it uses less digits than its factorization.

985137220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588971 (or 1588969 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 985137220 is about 31386.8956731946. The cubic root of 985137220 is about 995.0209906096.

The spelling of 985137220 in words is "nine hundred eighty-five million, one hundred thirty-seven thousand, two hundred twenty".