403146020 has 12 divisors (see below), whose sum is σ = 846606684. Its totient is φ = 161258400.

The previous prime is 403146019. The next prime is 403146031. The reversal of 403146020 is 20641304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 293985316 + 109160704 = 17146^2 + 10448^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 20157301 = 403146020 / (4 + 0 + 3 + 1 + 4 + 6 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 403145983 and 403146001.

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, 10078631 + ... + 10078670.

It is an arithmetic number, because the mean of its divisors is an integer number (70550557).

Almost surely, 2^403146020 is an apocalyptic number.

It is an amenable number.

403146020 is an abundant number, since it is smaller than the sum of its proper divisors (443460664).

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

403146020 is a wasteful number, since it uses less digits than its factorization.

403146020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20157310 (or 20157308 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 403146020 is about 20078.4964576534. The cubic root of 403146020 is about 738.7329303023.

Adding to 403146020 its reverse (20641304), we get a palindrome (423787324).

The spelling of 403146020 in words is "four hundred three million, one hundred forty-six thousand, twenty".