401333424 has 40 divisors (see below), whose sum is σ = 1038689472. Its totient is φ = 133531200.

The previous prime is 401333419. The next prime is 401333441. The reversal of 401333424 is 424333104.

It is a super-2 number, since 2×401333424² = 322137034439127552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 401333394 and 401333403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19599 + ... + 34449.

Almost surely, 2^401333424 is an apocalyptic number.

It is an amenable number.

401333424 is an abundant number, since it is smaller than the sum of its proper divisors (637356048).

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

401333424 is a wasteful number, since it uses less digits than its factorization.

401333424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15425 (or 15419 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 401333424 is about 20033.3078646538. The cubic root of 401333424 is about 737.6241209843.

Adding to 401333424 its reverse (424333104), we get a palindrome (825666528).

The spelling of 401333424 in words is "four hundred one million, three hundred thirty-three thousand, four hundred twenty-four".