423437520 has 160 divisors (see below), whose sum is σ = 1446336000. Its totient is φ = 101624320.

The previous prime is 423437519. The next prime is 423437537. The reversal of 423437520 is 25734324.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 281731 + ... + 283229.

It is an arithmetic number, because the mean of its divisors is an integer number (9039600).

Almost surely, 2^423437520 is an apocalyptic number.

423437520 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 423437520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723168000).

423437520 is an abundant number, since it is smaller than the sum of its proper divisors (1022898480).

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

423437520 is a wasteful number, since it uses less digits than its factorization.

423437520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 423437520 is about 20577.5975274083. The cubic root of 423437520 is about 750.9247969765.

The spelling of 423437520 in words is "four hundred twenty-three million, four hundred thirty-seven thousand, five hundred twenty".