423878500 has 192 divisors, whose sum is σ = 1056706560. Its totient is φ = 147840000.

The previous prime is 423878489. The next prime is 423878519. The reversal of 423878500 is 5878324.

423878500 = T₃₁ + T₃₂ + ... + T₁₃₆₄.

It is a self number, because there is not a number n which added to its sum of digits gives 423878500.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10338480 + ... + 10338520.

It is an arithmetic number, because the mean of its divisors is an integer number (5503680).

Almost surely, 2^423878500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423878500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528353280).

423878500 is an abundant number, since it is smaller than the sum of its proper divisors (632828060).

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

423878500 is a wasteful number, since it uses less digits than its factorization.

423878500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 423878500 is about 20588.3097897812. The cubic root of 423878500 is about 751.1853847562.

The spelling of 423878500 in words is "four hundred twenty-three million, eight hundred seventy-eight thousand, five hundred".