423778602 has 32 divisors (see below), whose sum is σ = 932182272. Its totient is φ = 127617984.

The previous prime is 423778591. The next prime is 423778609. The reversal of 423778602 is 206877324.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (423778609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54133 + ... + 61464.

It is an arithmetic number, because the mean of its divisors is an integer number (29130696).

Almost surely, 2^423778602 is an apocalyptic number.

423778602 is an abundant number, since it is smaller than the sum of its proper divisors (508403670).

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

423778602 is a wasteful number, since it uses less digits than its factorization.

423778602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115662.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 423778602 is about 20585.8835613145. The cubic root of 423778602 is about 751.1263679911.

The spelling of 423778602 in words is "four hundred twenty-three million, seven hundred seventy-eight thousand, six hundred two".