423565824 has 240 divisors, whose sum is σ = 1293104736. Its totient is φ = 123002880.

The previous prime is 423565823. The next prime is 423565859. The reversal of 423565824 is 428565324.

It is not an unprimeable number, because it can be changed into a prime (423565823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7991782 + ... + 7991834.

Almost surely, 2^423565824 is an apocalyptic number.

423565824 is a gapful number since it is divisible by the number (44) 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 423565824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646552368).

423565824 is an abundant number, since it is smaller than the sum of its proper divisors (869538912).

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

423565824 is a wasteful number, since it uses less digits than its factorization.

423565824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 112 counting only the distinct ones).

The product of its digits is 230400, while the sum is 39.

The square root of 423565824 is about 20580.7148563892. The cubic root of 423565824 is about 751.0006341591. Note that the first 3 decimals are identical.

The spelling of 423565824 in words is "four hundred twenty-three million, five hundred sixty-five thousand, eight hundred twenty-four".