423912680 has 32 divisors (see below), whose sum is σ = 1009911240. Its totient is φ = 159590400.

The previous prime is 423912673. The next prime is 423912683. The reversal of 423912680 is 86219324.

It can be written as a sum of positive squares in 4 ways, for example, as 378458116 + 45454564 = 19454^2 + 6742^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 423912680.

It is not an unprimeable number, because it can be changed into a prime (423912683) 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, 311021 + ... + 312380.

Almost surely, 2^423912680 is an apocalyptic number.

423912680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423912680 is an abundant number, since it is smaller than the sum of its proper divisors (585998560).

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

423912680 is a wasteful number, since it uses less digits than its factorization.

423912680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623429 (or 623425 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 423912680 is about 20589.1398557589. The cubic root of 423912680 is about 751.2055751538.

The spelling of 423912680 in words is "four hundred twenty-three million, nine hundred twelve thousand, six hundred eighty".