1423623872 has 56 divisors (see below), whose sum is σ = 3110788800. Its totient is φ = 641020160.

The previous prime is 1423623871. The next prime is 1423623889. The reversal of 1423623872 is 2783263241.

It is not an unprimeable number, because it can be changed into a prime (1423623871) 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, 65879 + ... + 84777.

It is an arithmetic number, because the mean of its divisors is an integer number (55549800).

Almost surely, 2^1423623872 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 1423623872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555394400).

1423623872 is an abundant number, since it is smaller than the sum of its proper divisors (1687164928).

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

1423623872 is a wasteful number, since it uses less digits than its factorization.

1423623872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19029 (or 19019 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 1423623872 is about 37730.9405130590. The cubic root of 1423623872 is about 1124.9462023986.

The spelling of 1423623872 in words is "one billion, four hundred twenty-three million, six hundred twenty-three thousand, eight hundred seventy-two".