402400004430 has 32 divisors (see below), whose sum is σ = 965821824000. Its totient is φ = 107299799712.

The previous prime is 402400004423. The next prime is 402400004431. The reversal of 402400004430 is 34400004204.

402400004430 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 402400004397 and 402400004406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402400004431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56271 + ... + 898869.

It is an arithmetic number, because the mean of its divisors is an integer number (30181932000).

Almost surely, 2^402400004430 is an apocalyptic number.

402400004430 is an abundant number, since it is smaller than the sum of its proper divisors (563421819570).

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

402400004430 is a wasteful number, since it uses less digits than its factorization.

402400004430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858528.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 402400004430 its reverse (34400004204), we get a palindrome (436800008634).

The spelling of 402400004430 in words is "four hundred two billion, four hundred million, four thousand, four hundred thirty".