228022236 has 144 divisors (see below), whose sum is σ = 661735200. Its totient is φ = 67897440.

The previous prime is 228022229. The next prime is 228022283. The reversal of 228022236 is 632220822.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a super-2 number, since 2×228022236² = 103988280220879392, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7355541 + ... + 7355571.

Almost surely, 2^228022236 is an apocalyptic number.

228022236 is a gapful number since it is divisible by the number (26) 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 228022236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330867600).

228022236 is an abundant number, since it is smaller than the sum of its proper divisors (433712964).

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

228022236 is a wasteful number, since it uses less digits than its factorization.

228022236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 228022236 is about 15100.4051601273. The cubic root of 228022236 is about 610.9313337652.

The spelling of 228022236 in words is "two hundred twenty-eight million, twenty-two thousand, two hundred thirty-six".