423621792 has 288 divisors, whose sum is σ = 1422308160. Its totient is φ = 121605120.

The previous prime is 423621787. The next prime is 423621859. The reversal of 423621792 is 297126324.

423621792 is a `hidden beast` number, since 4 + 23 + 621 + 7 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7992838 + ... + 7992890.

It is an arithmetic number, because the mean of its divisors is an integer number (4938570).

Almost surely, 2^423621792 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 423621792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711154080).

423621792 is an abundant number, since it is smaller than the sum of its proper divisors (998686368).

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

423621792 is a wasteful number, since it uses less digits than its factorization.

423621792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 98 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 423621792 is about 20582.0745310088. The cubic root of 423621792 is about 751.0337106020.

The spelling of 423621792 in words is "four hundred twenty-three million, six hundred twenty-one thousand, seven hundred ninety-two".