623211432 has 64 divisors (see below), whose sum is σ = 1652788800. Its totient is φ = 195148800.

The previous prime is 623211431. The next prime is 623211451. The reversal of 623211432 is 234112326.

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

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

It is not an unprimeable number, because it can be changed into a prime (623211431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284919 + ... + 287097.

It is an arithmetic number, because the mean of its divisors is an integer number (25824825).

Almost surely, 2^623211432 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 623211432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826394400).

623211432 is an abundant number, since it is smaller than the sum of its proper divisors (1029577368).

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

623211432 is a wasteful number, since it uses less digits than its factorization.

623211432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906 (or 2902 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 623211432 is about 24964.2030115123. The cubic root of 623211432 is about 854.1716185835.

Adding to 623211432 its reverse (234112326), we get a palindrome (857323758).

The spelling of 623211432 in words is "six hundred twenty-three million, two hundred eleven thousand, four hundred thirty-two".