423666324 has 18 divisors (see below), whose sum is σ = 1070934410. Its totient is φ = 141222096.

The previous prime is 423666293. The next prime is 423666431.

423666324 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 236852100 + 186814224 = 15390^2 + 13668^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11768509 = 423666324 / (4 + 2 + 3 + 6 + 6 + 6 + 3 + 2 + 4).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5884219 + ... + 5884290.

Almost surely, 2^423666324 is an apocalyptic number.

It is an amenable number.

423666324 is an abundant number, since it is smaller than the sum of its proper divisors (647268086).

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

423666324 is a wasteful number, since it uses less digits than its factorization.

423666324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11768519 (or 11768514 counting only the distinct ones).

The product of its digits is 124416, while the sum is 36.

The square root of 423666324 is about 20583.1563177274. The cubic root of 423666324 is about 751.0600264195.

The spelling of 423666324 in words is "four hundred twenty-three million, six hundred sixty-six thousand, three hundred twenty-four".