402020400224 has 24 divisors (see below), whose sum is σ = 791577559080. Its totient is φ = 200984829696.

The previous prime is 402020400211. The next prime is 402020400247. The reversal of 402020400224 is 422004020204.

It is a junction number, because it is equal to n+sod(n) for n = 402020400196 and 402020400205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534029 + ... + 1043660.

It is an arithmetic number, because the mean of its divisors is an integer number (32982398295).

Almost surely, 2^402020400224 is an apocalyptic number.

It is an amenable number.

402020400224 is a deficient number, since it is larger than the sum of its proper divisors (389557158856).

402020400224 is a wasteful number, since it uses less digits than its factorization.

402020400224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585662 (or 1585654 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 402020400224 its reverse (422004020204), we get a palindrome (824024420428).

The spelling of 402020400224 in words is "four hundred two billion, twenty million, four hundred thousand, two hundred twenty-four".