401215232 has 144 divisors (see below), whose sum is σ = 960271200. Its totient is φ = 165724160.

The previous prime is 401215231. The next prime is 401215291. The reversal of 401215232 is 232512104.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401215231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13834994 + ... + 13835022.

It is an arithmetic number, because the mean of its divisors is an integer number (6668550).

Almost surely, 2^401215232 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 401215232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480135600).

401215232 is an abundant number, since it is smaller than the sum of its proper divisors (559055968).

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

401215232 is an equidigital number, since it uses as much as digits as its factorization.

401215232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401215232 is about 20030.3577601600. The cubic root of 401215232 is about 737.5517041985.

Adding to 401215232 its reverse (232512104), we get a palindrome (633727336).

The spelling of 401215232 in words is "four hundred one million, two hundred fifteen thousand, two hundred thirty-two".