972278 has 4 divisors (see below), whose sum is σ = 1458420. Its totient is φ = 486138.

The previous prime is 972277. The next prime is 972313. The reversal of 972278 is 872279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 872279 = 137 ⋅6367.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243068 + ... + 243071.

It is an arithmetic number, because the mean of its divisors is an integer number (364605).

2⁹⁷²²⁷⁸ is an apocalyptic number.

972278 is a deficient number, since it is larger than the sum of its proper divisors (486142).

972278 is a wasteful number, since it uses less digits than its factorization.

972278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486141.

The product of its digits is 14112, while the sum is 35.

The square root of 972278 is about 986.0415812733. The cubic root of 972278 is about 99.0672603503.

Subtracting from 972278 its reverse (872279), we obtain a palindrome (99999).

The spelling of 972278 in words is "nine hundred seventy-two thousand, two hundred seventy-eight".