423668980 has 48 divisors (see below), whose sum is σ = 1022950656. Its totient is φ = 144380160.

The previous prime is 423668977. The next prime is 423668983. The reversal of 423668980 is 89866324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (423668977) and next prime (423668983).

It is a super-2 number, since 2×423668980² = 358990809228480800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423668980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423668983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14320 + ... + 32440.

It is an arithmetic number, because the mean of its divisors is an integer number (21311472).

Almost surely, 2^423668980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423668980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511475328).

423668980 is an abundant number, since it is smaller than the sum of its proper divisors (599281676).

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

423668980 is a wasteful number, since it uses less digits than its factorization.

423668980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18304 (or 18302 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 423668980 is about 20583.2208363997. The cubic root of 423668980 is about 751.0615959025.

The spelling of 423668980 in words is "four hundred twenty-three million, six hundred sixty-eight thousand, nine hundred eighty".