401403252 has 48 divisors (see below), whose sum is σ = 1023708672. Its totient is φ = 121866240.

The previous prime is 401403217. The next prime is 401403263. The reversal of 401403252 is 252304104.

It is a super-2 number, since 2×401403252² = 322249141432351008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25413 + ... + 38060.

It is an arithmetic number, because the mean of its divisors is an integer number (21327264).

Almost surely, 2^401403252 is an apocalyptic number.

It is an amenable number.

401403252 is an abundant number, since it is smaller than the sum of its proper divisors (622305420).

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

401403252 is a wasteful number, since it uses less digits than its factorization.

401403252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63528 (or 63526 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 401403252 is about 20035.0505864098. The cubic root of 401403252 is about 737.6668982422. Note that the first 3 decimals are identical.

Adding to 401403252 its reverse (252304104), we get a palindrome (653707356).

The spelling of 401403252 in words is "four hundred one million, four hundred three thousand, two hundred fifty-two".