423251636 has 24 divisors (see below), whose sum is σ = 771853320. Its totient is φ = 202829312.

The previous prime is 423251597. The next prime is 423251639. The reversal of 423251636 is 636152324.

It can be written as a sum of positive squares in 4 ways, for example, as 214622500 + 208629136 = 14650^2 + 14444^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423251639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2576 + ... + 29208.

It is an arithmetic number, because the mean of its divisors is an integer number (32160555).

Almost surely, 2^423251636 is an apocalyptic number.

It is an amenable number.

423251636 is a deficient number, since it is larger than the sum of its proper divisors (348601684).

423251636 is a wasteful number, since it uses less digits than its factorization.

423251636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26803 (or 26801 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 423251636 is about 20573.0803721757. The cubic root of 423251636 is about 750.8148985627.

The spelling of 423251636 in words is "four hundred twenty-three million, two hundred fifty-one thousand, six hundred thirty-six".