401405632 has 28 divisors (see below), whose sum is σ = 843396840. Its totient is φ = 188896256.

The previous prime is 401405597. The next prime is 401405651. The reversal of 401405632 is 236504104.

It is a super-2 number, since 2×401405632² = 322252962802638848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401405597 and 401405606.

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 3 ways as a sum of consecutive naturals, for example, 183382 + ... + 185557.

Almost surely, 2^401405632 is an apocalyptic number.

It is an amenable number.

401405632 is an abundant number, since it is smaller than the sum of its proper divisors (441991208).

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

401405632 is a wasteful number, since it uses less digits than its factorization.

401405632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368968 (or 368958 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 401405632 is about 20035.1099822287. The cubic root of 401405632 is about 737.6683561641.

Adding to 401405632 its reverse (236504104), we get a palindrome (637909736).

The spelling of 401405632 in words is "four hundred one million, four hundred five thousand, six hundred thirty-two".