401215332 has 96 divisors (see below), whose sum is σ = 1103155200. Its totient is φ = 113436960.

The previous prime is 401215307. The next prime is 401215357. The reversal of 401215332 is 233512104.

It is an interprime number because it is at equal distance from previous prime (401215307) and next prime (401215357).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 401215299 and 401215308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 439957 + ... + 440867.

It is an arithmetic number, because the mean of its divisors is an integer number (11491200).

Almost surely, 2^401215332 is an apocalyptic number.

401215332 is a gapful number since it is divisible by the number (42) 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 401215332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (551577600).

401215332 is an abundant number, since it is smaller than the sum of its proper divisors (701939868).

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

401215332 is a wasteful number, since it uses less digits than its factorization.

401215332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 401215332 is about 20030.3602563708. The cubic root of 401215332 is about 737.5517654750.

Adding to 401215332 its reverse (233512104), we get a palindrome (634727436).

The spelling of 401215332 in words is "four hundred one million, two hundred fifteen thousand, three hundred thirty-two".