423690456 has 96 divisors (see below), whose sum is σ = 1304702640. Its totient is φ = 113928192.

The previous prime is 423690451. The next prime is 423690469. The reversal of 423690456 is 654096324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423690451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9396 + ... + 30588.

Almost surely, 2^423690456 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 423690456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652351320).

423690456 is an abundant number, since it is smaller than the sum of its proper divisors (881012184).

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

423690456 is a wasteful number, since it uses less digits than its factorization.

423690456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21233 (or 21222 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 423690456 is about 20583.7425168505. The cubic root of 423690456 is about 751.0742862551.

The spelling of 423690456 in words is "four hundred twenty-three million, six hundred ninety thousand, four hundred fifty-six".