8123730 has 16 divisors (see below), whose sum is σ = 19497024. Its totient is φ = 2166320.

The previous prime is 8123729. The next prime is 8123737. The reversal of 8123730 is 373218.

It is a super-2 number, since 2×8123730² = 131989978225800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8123730.

It is not an unprimeable number, because it can be changed into a prime (8123737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135366 + ... + 135425.

It is an arithmetic number, because the mean of its divisors is an integer number (1218564).

Almost surely, 2^8123730 is an apocalyptic number.

8123730 is an abundant number, since it is smaller than the sum of its proper divisors (11373294).

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

8123730 is a wasteful number, since it uses less digits than its factorization.

8123730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270801.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 8123730 is about 2850.2157813050. The cubic root of 8123730 is about 201.0258128776.

Adding to 8123730 its reverse (373218), we get a palindrome (8496948).

The spelling of 8123730 in words is "eight million, one hundred twenty-three thousand, seven hundred thirty".