403423020 has 288 divisors, whose sum is σ = 1643765760. Its totient is φ = 77345280.

The previous prime is 403423003. The next prime is 403423049. The reversal of 403423020 is 20324304.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 403422984 and 403423002.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 179061 + ... + 181299.

It is an arithmetic number, because the mean of its divisors is an integer number (5707520).

Almost surely, 2^403423020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403423020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821882880).

403423020 is an abundant number, since it is smaller than the sum of its proper divisors (1240342740).

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

403423020 is a wasteful number, since it uses less digits than its factorization.

403423020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285 (or 2280 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 403423020 is about 20085.3932000347. The cubic root of 403423020 is about 738.9020850360.

Adding to 403423020 its reverse (20324304), we get a palindrome (423747324).

The spelling of 403423020 in words is "four hundred three million, four hundred twenty-three thousand, twenty".