228646020 has 24 divisors (see below), whose sum is σ = 640209024. Its totient is φ = 60972256.

The previous prime is 228645983. The next prime is 228646027. The reversal of 228646020 is 20646822.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (228646027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1905324 + ... + 1905443.

It is an arithmetic number, because the mean of its divisors is an integer number (26675376).

Almost surely, 2^228646020 is an apocalyptic number.

228646020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228646020 is an abundant number, since it is smaller than the sum of its proper divisors (411563004).

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

228646020 is a wasteful number, since it uses less digits than its factorization.

228646020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810779 (or 3810777 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 228646020 is about 15121.0455987673. The cubic root of 228646020 is about 611.4879201445.

The spelling of 228646020 in words is "two hundred twenty-eight million, six hundred forty-six thousand, twenty".