424392228 has 144 divisors (see below), whose sum is σ = 1221816960. Its totient is φ = 123222528.

The previous prime is 424392223. The next prime is 424392247. The reversal of 424392228 is 822293424.

424392228 is a `hidden beast` number, since 42 + 4 + 392 + 228 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 424392192 and 424392201.

It is not an unprimeable number, because it can be changed into a prime (424392223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 957775 + ... + 958217.

It is an arithmetic number, because the mean of its divisors is an integer number (8484840).

Almost surely, 2^424392228 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 424392228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610908480).

424392228 is an abundant number, since it is smaller than the sum of its proper divisors (797424732).

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

424392228 is a wasteful number, since it uses less digits than its factorization.

424392228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 573 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 424392228 is about 20600.7822181586. The cubic root of 424392228 is about 751.4887336077.

The spelling of 424392228 in words is "four hundred twenty-four million, three hundred ninety-two thousand, two hundred twenty-eight".