401433730 has 8 divisors (see below), whose sum is σ = 722580732. Its totient is φ = 160573488.

The previous prime is 401433707. The next prime is 401433779. The reversal of 401433730 is 37334104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 390734289 + 10699441 = 19767^2 + 3271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×401433730² = 322298079163425800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401433695 and 401433704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20071677 + ... + 20071696.

Almost surely, 2^401433730 is an apocalyptic number.

401433730 is a deficient number, since it is larger than the sum of its proper divisors (321147002).

401433730 is a wasteful number, since it uses less digits than its factorization.

401433730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40143380.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 401433730 is about 20035.8111889686. The cubic root of 401433730 is about 737.6855677826.

Adding to 401433730 its reverse (37334104), we get a palindrome (438767834).

The spelling of 401433730 in words is "four hundred one million, four hundred thirty-three thousand, seven hundred thirty".