423591040 has 64 divisors (see below), whose sum is σ = 1072242360. Its totient is φ = 159465472.

The previous prime is 423591029. The next prime is 423591043. The reversal of 423591040 is 40195324.

It can be written as a sum of positive squares in 4 ways, for example, as 251666496 + 171924544 = 15864^2 + 13112^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (423591043) 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, 8587 + ... + 30346.

Almost surely, 2^423591040 is an apocalyptic number.

423591040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423591040 is an abundant number, since it is smaller than the sum of its proper divisors (648651320).

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

423591040 is a wasteful number, since it uses less digits than its factorization.

423591040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38969 (or 38957 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 423591040 is about 20581.3274596174. The cubic root of 423591040 is about 751.0155368851.

The spelling of 423591040 in words is "four hundred twenty-three million, five hundred ninety-one thousand, forty".