8423780 has 12 divisors (see below), whose sum is σ = 17689980. Its totient is φ = 3369504.

The previous prime is 8423777. The next prime is 8423791. The reversal of 8423780 is 873248.

It can be written as a sum of positive squares in 2 ways, for example, as 5654884 + 2768896 = 2378^2 + 1664^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 8⁵ + 4¹¹ + 2²¹ + 3 + 7⁴ + 8⁷ + 0 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210575 + ... + 210614.

It is an arithmetic number, because the mean of its divisors is an integer number (1474165).

Almost surely, 2^8423780 is an apocalyptic number.

It is an amenable number.

8423780 is an abundant number, since it is smaller than the sum of its proper divisors (9266200).

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

8423780 is a wasteful number, since it uses less digits than its factorization.

8423780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421198 (or 421196 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 8423780 is about 2902.3748896378. The cubic root of 8423780 is about 203.4709152774.

The spelling of 8423780 in words is "eight million, four hundred twenty-three thousand, seven hundred eighty".