422405452 has 24 divisors (see below), whose sum is σ = 865418400. Its totient is φ = 176615040.

The previous prime is 422405449. The next prime is 422405461. The reversal of 422405452 is 254504224.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 422405452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182827 + ... + 185122.

It is an arithmetic number, because the mean of its divisors is an integer number (36059100).

Almost surely, 2^422405452 is an apocalyptic number.

It is an amenable number.

422405452 is an abundant number, since it is smaller than the sum of its proper divisors (443012948).

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

422405452 is a wasteful number, since it uses less digits than its factorization.

422405452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368001 (or 367999 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 422405452 is about 20552.5047621938. The cubic root of 422405452 is about 750.3142102701.

Adding to 422405452 its reverse (254504224), we get a palindrome (676909676).

The spelling of 422405452 in words is "four hundred twenty-two million, four hundred five thousand, four hundred fifty-two".