423220878 has 48 divisors (see below), whose sum is σ = 941569200. Its totient is φ = 137313792.

The previous prime is 423220873. The next prime is 423220879. The reversal of 423220878 is 878022324.

423220878 is a `hidden beast` number, since 423 + 220 + 8 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423220873) 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, 272448 + ... + 273996.

It is an arithmetic number, because the mean of its divisors is an integer number (19616025).

Almost surely, 2^423220878 is an apocalyptic number.

423220878 is an abundant number, since it is smaller than the sum of its proper divisors (518348322).

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

423220878 is a wasteful number, since it uses less digits than its factorization.

423220878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 423220878 is about 20572.3328283401. The cubic root of 423220878 is about 750.7967107031.

The spelling of 423220878 in words is "four hundred twenty-three million, two hundred twenty thousand, eight hundred seventy-eight".