10161228 has 72 divisors (see below), whose sum is σ = 30106944. Its totient is φ = 2637600.

The previous prime is 10161227. The next prime is 10161251. The reversal of 10161228 is 82216101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (10161227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5683 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (418152).

Almost surely, 2^10161228 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 10161228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15053472).

10161228 is an abundant number, since it is smaller than the sum of its proper divisors (19945716).

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

10161228 is a wasteful number, since it uses less digits than its factorization.

10161228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 10161228 is about 3187.6681132138. The cubic root of 10161228 is about 216.5951522034.

Adding to 10161228 its reverse (82216101), we get a palindrome (92377329).

The spelling of 10161228 in words is "ten million, one hundred sixty-one thousand, two hundred twenty-eight".