400303302432 has 96 divisors (see below), whose sum is σ = 1146938849280. Its totient is φ = 121238872320.

The previous prime is 400303302419. The next prime is 400303302439. The reversal of 400303302432 is 234203303004.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×400303302432² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (400303302439) 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, 1883353 + ... + 2085095.

It is an arithmetic number, because the mean of its divisors is an integer number (11947279680).

Almost surely, 2^400303302432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400303302432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573469424640).

400303302432 is an abundant number, since it is smaller than the sum of its proper divisors (746635546848).

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

400303302432 is a wasteful number, since it uses less digits than its factorization.

400303302432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203646 (or 203638 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 24.

Adding to 400303302432 its reverse (234203303004), we get a palindrome (634506605436).

The spelling of 400303302432 in words is "four hundred billion, three hundred three million, three hundred two thousand, four hundred thirty-two".