400303420 has 48 divisors (see below), whose sum is σ = 971012448. Its totient is φ = 137000960.

The previous prime is 400303391. The next prime is 400303427. The reversal of 400303420 is 24303004.

400303420 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 400303394 and 400303403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400303427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49777 + ... + 57256.

It is an arithmetic number, because the mean of its divisors is an integer number (20229426).

Almost surely, 2^400303420 is an apocalyptic number.

It is an amenable number.

400303420 is an abundant number, since it is smaller than the sum of its proper divisors (570709028).

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

400303420 is a wasteful number, since it uses less digits than its factorization.

400303420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107070 (or 107068 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 400303420 is about 20007.5840620501. The cubic root of 400303420 is about 736.9925541145.

Adding to 400303420 its reverse (24303004), we get a palindrome (424606424).

The spelling of 400303420 in words is "four hundred million, three hundred three thousand, four hundred twenty".