423026644 has 12 divisors (see below), whose sum is σ = 742971124. Its totient is φ = 210749184.

The previous prime is 423026633. The next prime is 423026717. The reversal of 423026644 is 446620324.

It can be written as a sum of positive squares in 2 ways, for example, as 179292100 + 243734544 = 13390^2 + 15612^2 .

It is a congruent number.

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, 189789 + ... + 192004.

Almost surely, 2^423026644 is an apocalyptic number.

It is an amenable number.

423026644 is a deficient number, since it is larger than the sum of its proper divisors (319944480).

423026644 is a wasteful number, since it uses less digits than its factorization.

423026644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382074 (or 382072 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 423026644 is about 20567.6115288091. The cubic root of 423026644 is about 750.6818356494.

Adding to 423026644 its reverse (446620324), we get a palindrome (869646968).

The spelling of 423026644 in words is "four hundred twenty-three million, twenty-six thousand, six hundred forty-four".