401305232 has 40 divisors (see below), whose sum is σ = 824426400. Its totient is φ = 188704512.

The previous prime is 401305217. The next prime is 401305279. The reversal of 401305232 is 232503104.

It is a happy number.

It is a super-2 number, since 2×401305232² = 322091778461147648, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 37508 + ... + 47004.

It is an arithmetic number, because the mean of its divisors is an integer number (20610660).

Almost surely, 2^401305232 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 401305232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412213200).

401305232 is an abundant number, since it is smaller than the sum of its proper divisors (423121168).

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

401305232 is a wasteful number, since it uses less digits than its factorization.

401305232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9663 (or 9657 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 401305232 is about 20032.6042241142. The cubic root of 401305232 is about 737.6068489066.

Adding to 401305232 its reverse (232503104), we get a palindrome (633808336).

The spelling of 401305232 in words is "four hundred one million, three hundred five thousand, two hundred thirty-two".