423263280 has 160 divisors (see below), whose sum is σ = 1515760128. Its totient is φ = 96563200.

The previous prime is 423263279. The next prime is 423263287. The reversal of 423263280 is 82362324.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (423263287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40165 + ... + 49595.

Almost surely, 2^423263280 is an apocalyptic number.

423263280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423263280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757880064).

423263280 is an abundant number, since it is smaller than the sum of its proper divisors (1092496848).

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

423263280 is a wasteful number, since it uses less digits than its factorization.

423263280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9475 (or 9469 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 423263280 is about 20573.3633613952. The cubic root of 423263280 is about 750.8217836777.

The spelling of 423263280 in words is "four hundred twenty-three million, two hundred sixty-three thousand, two hundred eighty".