423207288 has 128 divisors (see below), whose sum is σ = 1387008000. Its totient is φ = 117002880.

The previous prime is 423207269. The next prime is 423207313. The reversal of 423207288 is 882702324.

423207288 is a `hidden beast` number, since 423 + 207 + 28 + 8 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42358 + ... + 51386.

It is an arithmetic number, because the mean of its divisors is an integer number (10836000).

Almost surely, 2^423207288 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 423207288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693504000).

423207288 is an abundant number, since it is smaller than the sum of its proper divisors (963800712).

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

423207288 is a wasteful number, since it uses less digits than its factorization.

423207288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9082 (or 9072 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 423207288 is about 20572.0025277074. The cubic root of 423207288 is about 750.7886743663.

The spelling of 423207288 in words is "four hundred twenty-three million, two hundred seven thousand, two hundred eighty-eight".