401345532 has 72 divisors (see below), whose sum is σ = 1175379296. Its totient is φ = 113094144.

The previous prime is 401345519. The next prime is 401345533. The reversal of 401345532 is 235543104.

It is a super-2 number, since 2×401345532² = 322156472112726048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401345496 and 401345505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401345533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7488 + ... + 29304.

Almost surely, 2^401345532 is an apocalyptic number.

401345532 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 401345532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (587689648).

401345532 is an abundant number, since it is smaller than the sum of its proper divisors (774033764).

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

401345532 is a wasteful number, since it uses less digits than its factorization.

401345532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21907 (or 21902 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 401345532 is about 20033.6100590982. The cubic root of 401345532 is about 737.6315388090.

Adding to 401345532 its reverse (235543104), we get a palindrome (636888636).

The spelling of 401345532 in words is "four hundred one million, three hundred forty-five thousand, five hundred thirty-two".