402435206400 has 864 divisors, whose sum is σ = 1477060462080. Its totient is φ = 96046940160.

The previous prime is 402435206389. The next prime is 402435206449. The reversal of 402435206400 is 4602534204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 567609246 + ... + 567609954.

It is an arithmetic number, because the mean of its divisors is an integer number (1709560720).

Almost surely, 2^402435206400 is an apocalyptic number.

402435206400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402435206400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (738530231040).

402435206400 is an abundant number, since it is smaller than the sum of its proper divisors (1074625255680).

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

402435206400 is a wasteful number, since it uses less digits than its factorization.

402435206400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The spelling of 402435206400 in words is "four hundred two billion, four hundred thirty-five million, two hundred six thousand, four hundred".