423618720 has 384 divisors, whose sum is σ = 1625702400. Its totient is φ = 92574720.

The previous prime is 423618707. The next prime is 423618739. The reversal of 423618720 is 27816324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5103799 + ... + 5103881.

It is an arithmetic number, because the mean of its divisors is an integer number (4233600).

Almost surely, 2^423618720 is an apocalyptic number.

423618720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423618720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812851200).

423618720 is an abundant number, since it is smaller than the sum of its proper divisors (1202083680).

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

423618720 is a wasteful number, since it uses less digits than its factorization.

423618720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 423618720 is about 20581.9999028277. Note that the first 4 decimals coincide. The cubic root of 423618720 is about 751.0318951609.

The spelling of 423618720 in words is "four hundred twenty-three million, six hundred eighteen thousand, seven hundred twenty".