423565344 has 72 divisors (see below), whose sum is σ = 1237099500. Its totient is φ = 137369088.

The previous prime is 423565321. The next prime is 423565349. The reversal of 423565344 is 443565324.

It can be written as a sum of positive squares in 2 ways, for example, as 369100944 + 54464400 = 19212^2 + 7380^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 423565299 and 423565308.

It is not an unprimeable number, because it can be changed into a prime (423565349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9219 + ... + 30530.

Almost surely, 2^423565344 is an apocalyptic number.

It is an amenable number.

423565344 is an abundant number, since it is smaller than the sum of its proper divisors (813534156).

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

423565344 is a wasteful number, since it uses less digits than its factorization.

423565344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39802 (or 39791 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

The square root of 423565344 is about 20580.7031949834. The cubic root of 423565344 is about 751.0003504720. Note that the first 3 decimals are identical.

The spelling of 423565344 in words is "four hundred twenty-three million, five hundred sixty-five thousand, three hundred forty-four".