423504720 has 160 divisors (see below), whose sum is σ = 1475798400. Its totient is φ = 111614976.

The previous prime is 423504713. The next prime is 423504751. The reversal of 423504720 is 27405324.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191139 + ... + 193341.

It is an arithmetic number, because the mean of its divisors is an integer number (9223740).

Almost surely, 2^423504720 is an apocalyptic number.

423504720 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 423504720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737899200).

423504720 is an abundant number, since it is smaller than the sum of its proper divisors (1052293680).

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

423504720 is a wasteful number, since it uses less digits than its factorization.

423504720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 423504720 is about 20579.2303063064. The cubic root of 423504720 is about 750.9645190722.

The spelling of 423504720 in words is "four hundred twenty-three million, five hundred four thousand, seven hundred twenty".