9228690 has 72 divisors (see below), whose sum is σ = 24997284. Its totient is φ = 2361600.

The previous prime is 9228689. The next prime is 9228691. The reversal of 9228690 is 968229.

It is an interprime number because it is at equal distance from previous prime (9228689) and next prime (9228691).

It can be written as a sum of positive squares in 6 ways, for example, as 210681 + 9018009 = 459^2 + 3003^2 .

It is a super-2 number, since 2×9228690² = 170337438232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9228691) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 151260 + ... + 151320.

Almost surely, 2^9228690 is an apocalyptic number.

9228690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9228690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12498642).

9228690 is an abundant number, since it is smaller than the sum of its proper divisors (15768594).

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

9228690 is a wasteful number, since it uses less digits than its factorization.

9228690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 9228690 is about 3037.8759026662. The cubic root of 9228690 is about 209.7554977503.

It can be divided in two parts, 92 and 28690, that added together give a palindrome (28782).

The spelling of 9228690 in words is "nine million, two hundred twenty-eight thousand, six hundred ninety".