72278 has 8 divisors (see below), whose sum is σ = 110160. Its totient is φ = 35560.

The previous prime is 72277. The next prime is 72287. The reversal of 72278 is 87227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113 + ... + 396.

It is an arithmetic number, because the mean of its divisors is an integer number (13770).

2⁷²²⁷⁸ is an apocalyptic number.

72278 is a deficient number, since it is larger than the sum of its proper divisors (37882).

72278 is a wasteful number, since it uses less digits than its factorization.

72278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582.

The product of its digits is 1568, while the sum is 26.

The square root of 72278 is about 268.8456806423. The cubic root of 72278 is about 41.6551505952.

The spelling of 72278 in words is "seventy-two thousand, two hundred seventy-eight".