423641500 has 24 divisors (see below), whose sum is σ = 925234128. Its totient is φ = 169456400.

The previous prime is 423641497. The next prime is 423641509. The reversal of 423641500 is 5146324.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423641509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423142 + ... + 424141.

It is an arithmetic number, because the mean of its divisors is an integer number (38551422).

Almost surely, 2^423641500 is an apocalyptic number.

It is an amenable number.

423641500 is an abundant number, since it is smaller than the sum of its proper divisors (501592628).

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

423641500 is a wasteful number, since it uses less digits than its factorization.

423641500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847302 (or 847290 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 423641500 is about 20582.5532915622. The cubic root of 423641500 is about 751.0453571092.

Adding to 423641500 its reverse (5146324), we get a palindrome (428787824).

The spelling of 423641500 in words is "four hundred twenty-three million, six hundred forty-one thousand, five hundred".