423306240 has 352 divisors, whose sum is σ = 1609826304. Its totient is φ = 92897280.

The previous prime is 423306223. The next prime is 423306259. The reversal of 423306240 is 42603324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 423306240.

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, 3333057 + ... + 3333183.

Almost surely, 2^423306240 is an apocalyptic number.

423306240 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 423306240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804913152).

423306240 is an abundant number, since it is smaller than the sum of its proper divisors (1186520064).

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

423306240 is a wasteful number, since it uses less digits than its factorization.

423306240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 423306240 is about 20574.4074033737. The cubic root of 423306240 is about 750.8471848989.

Adding to 423306240 its reverse (42603324), we get a palindrome (465909564).

The spelling of 423306240 in words is "four hundred twenty-three million, three hundred six thousand, two hundred forty".