12345378 has 16 divisors (see below), whose sum is σ = 25487616. Its totient is φ = 3982320.

The previous prime is 12345373. The next prime is 12345379. The reversal of 12345378 is 87354321.

It is a super-3 number, since 3×12345378³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12345371) 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, 33001 + ... + 33372.

It is an arithmetic number, because the mean of its divisors is an integer number (1592976).

Almost surely, 2^12345378 is an apocalyptic number.

12345378 is an abundant number, since it is smaller than the sum of its proper divisors (13142238).

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

12345378 is a wasteful number, since it uses less digits than its factorization.

12345378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66409.

The product of its digits is 20160, while the sum is 33.

The square root of 12345378 is about 3513.5990095627. The cubic root of 12345378 is about 231.1185463755.

Adding to 12345378 its reverse (87354321), we get a palindrome (99699699).

The spelling of 12345378 in words is "twelve million, three hundred forty-five thousand, three hundred seventy-eight".