972390 has 16 divisors (see below), whose sum is σ = 2333808. Its totient is φ = 259296.

The previous prime is 972373. The next prime is 972403. The reversal of 972390 is 93279.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 32413 = 972390 / (9 + 7 + 2 + 3 + 9 + 0).

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16177 + ... + 16236.

It is an arithmetic number, because the mean of its divisors is an integer number (145863).

2⁹⁷²³⁹⁰ is an apocalyptic number.

972390 is an abundant number, since it is smaller than the sum of its proper divisors (1361418).

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

972390 is a wasteful number, since it uses less digits than its factorization.

972390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32423.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 972390 is about 986.0983723747. The cubic root of 972390 is about 99.0710641688.

The spelling of 972390 in words is "nine hundred seventy-two thousand, three hundred ninety".