101004228 has 144 divisors (see below), whose sum is σ = 298217920. Its totient is φ = 28553472.

The previous prime is 101004221. The next prime is 101004229. The reversal of 101004228 is 822400101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 101004228.

It is not an unprimeable number, because it can be changed into a prime (101004221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 328851 + ... + 329157.

Almost surely, 2^101004228 is an apocalyptic number.

101004228 is a gapful number since it is divisible by the number (18) 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 101004228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149108960).

101004228 is an abundant number, since it is smaller than the sum of its proper divisors (197213692).

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

101004228 is a wasteful number, since it uses less digits than its factorization.

101004228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 101004228 is about 10050.0859697816. The cubic root of 101004228 is about 465.7074489855.

Adding to 101004228 its reverse (822400101), we get a palindrome (923404329).

The spelling of 101004228 in words is "one hundred one million, four thousand, two hundred twenty-eight".