8378312 has 8 divisors (see below), whose sum is σ = 15709350. Its totient is φ = 4189152.

The previous prime is 8378311. The next prime is 8378327. The reversal of 8378312 is 2138738.

It can be written as a sum of positive squares in only one way, i.e., 4866436 + 3511876 = 2206^2 + 1874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×8378312² = 140392223938688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8378311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523637 + ... + 523652.

Almost surely, 2^8378312 is an apocalyptic number.

It is an amenable number.

8378312 is a deficient number, since it is larger than the sum of its proper divisors (7331038).

8378312 is a wasteful number, since it uses less digits than its factorization.

8378312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047295 (or 1047291 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 8378312 is about 2894.5313955803. The cubic root of 8378312 is about 203.1041713396.

The spelling of 8378312 in words is "eight million, three hundred seventy-eight thousand, three hundred twelve".