9213003720 has 128 divisors (see below), whose sum is σ = 30791577600. Its totient is φ = 2450276352.

The previous prime is 9213003703. The next prime is 9213003733. The reversal of 9213003720 is 273003129.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402504 + ... + 424776.

It is an arithmetic number, because the mean of its divisors is an integer number (240559200).

Almost surely, 2^9213003720 is an apocalyptic number.

9213003720 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 9213003720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15395788800).

9213003720 is an abundant number, since it is smaller than the sum of its proper divisors (21578573880).

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

9213003720 is a wasteful number, since it uses less digits than its factorization.

9213003720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22676 (or 22666 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 9213003720 is about 95984.3931063795. The cubic root of 9213003720 is about 2096.3658779201.

Adding to 9213003720 its reverse (273003129), we get a palindrome (9486006849).

The spelling of 9213003720 in words is "nine billion, two hundred thirteen million, three thousand, seven hundred twenty".