422020400 has 60 divisors (see below), whose sum is σ = 1067286600. Its totient is φ = 159920640.

The previous prime is 422020369. The next prime is 422020411. The reversal of 422020400 is 4020224.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20165 + ... + 35364.

It is an arithmetic number, because the mean of its divisors is an integer number (17788110).

Almost surely, 2^422020400 is an apocalyptic number.

422020400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422020400 is an abundant number, since it is smaller than the sum of its proper divisors (645266200).

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

422020400 is a wasteful number, since it uses less digits than its factorization.

422020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55566 (or 55555 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 422020400 is about 20543.1351064048. The cubic root of 422020400 is about 750.0861530661.

Adding to 422020400 its reverse (4020224), we get a palindrome (426040624).

The spelling of 422020400 in words is "four hundred twenty-two million, twenty thousand, four hundred".