72378 has 12 divisors (see below), whose sum is σ = 156858. Its totient is φ = 24120.

The previous prime is 72367. The next prime is 72379. The reversal of 72378 is 87327.

It can be written as a sum of positive squares in only one way, i.e., 71289 + 1089 = 267^2 + 33^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1993 + ... + 2028.

2⁷²³⁷⁸ is an apocalyptic number.

72378 is an abundant number, since it is smaller than the sum of its proper divisors (84480).

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

72378 is a wasteful number, since it uses less digits than its factorization.

72378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029 (or 4026 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 72378 is about 269.0315966573. The cubic root of 72378 is about 41.6743523600.

The spelling of 72378 in words is "seventy-two thousand, three hundred seventy-eight".