402246446080 has 88 divisors (see below), whose sum is σ = 974475005040. Its totient is φ = 159305318400.

The previous prime is 402246446051. The next prime is 402246446083. The reversal of 402246446080 is 80644642204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (402246446083) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 128191 + ... + 906049.

Almost surely, 2^402246446080 is an apocalyptic number.

402246446080 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 402246446080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487237502520).

402246446080 is an abundant number, since it is smaller than the sum of its proper divisors (572228558960).

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

402246446080 is a wasteful number, since it uses less digits than its factorization.

402246446080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777985 (or 777967 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 40.

The spelling of 402246446080 in words is "four hundred two billion, two hundred forty-six million, four hundred forty-six thousand, eighty".