423685740 has 24 divisors (see below), whose sum is σ = 1186320240. Its totient is φ = 112982848.

The previous prime is 423685729. The next prime is 423685753. The reversal of 423685740 is 47586324.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3530655 + ... + 3530774.

It is an arithmetic number, because the mean of its divisors is an integer number (49430010).

Almost surely, 2^423685740 is an apocalyptic number.

It is an amenable number.

423685740 is an abundant number, since it is smaller than the sum of its proper divisors (762634500).

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

423685740 is a wasteful number, since it uses less digits than its factorization.

423685740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7061441 (or 7061439 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 423685740 is about 20583.6279601046. The cubic root of 423685740 is about 751.0714995670.

The spelling of 423685740 in words is "four hundred twenty-three million, six hundred eighty-five thousand, seven hundred forty".