423493632 has 108 divisors (see below), whose sum is σ = 1226829240. Its totient is φ = 140771328.

The previous prime is 423493619. The next prime is 423493643. The reversal of 423493632 is 236394324.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1179469 + ... + 1179827.

It is an arithmetic number, because the mean of its divisors is an integer number (11359530).

Almost surely, 2^423493632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423493632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613414620).

423493632 is an abundant number, since it is smaller than the sum of its proper divisors (803335608).

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

423493632 is an frugal number, since it uses more digits than its factorization.

423493632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 364 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The square root of 423493632 is about 20578.9609067125. The cubic root of 423493632 is about 750.9579652159.

The spelling of 423493632 in words is "four hundred twenty-three million, four hundred ninety-three thousand, six hundred thirty-two".