972858 has 8 divisors (see below), whose sum is σ = 1945728. Its totient is φ = 324284.

The previous prime is 972847. The next prime is 972869. The reversal of 972858 is 858279.

It is an interprime number because it is at equal distance from previous prime (972847) and next prime (972869).

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

972858 is an admirable number.

It is an unprimeable number.

972858 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81066 + ... + 81077.

It is an arithmetic number, because the mean of its divisors is an integer number (243216).

2⁹⁷²⁸⁵⁸ is an apocalyptic number.

972858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

972858 is a wasteful number, since it uses less digits than its factorization.

972858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162148.

The product of its digits is 40320, while the sum is 39.

The square root of 972858 is about 986.3356426694. The cubic root of 972858 is about 99.0869555367.

It can be divided in two parts, 972 and 858, that added together give a triangular number (1830 = T₆₀).

The spelling of 972858 in words is "nine hundred seventy-two thousand, eight hundred fifty-eight".