30972293 has 8 divisors (see below), whose sum is σ = 34701600. Its totient is φ = 27395280.

The previous prime is 30972287. The next prime is 30972301. The reversal of 30972293 is 39227903.

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

It is not a de Polignac number, because 30972293 - 2²⁰ = 29923717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30972233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37643 + ... + 38456.

It is an arithmetic number, because the mean of its divisors is an integer number (4337700).

Almost surely, 2^30972293 is an apocalyptic number.

It is an amenable number.

30972293 is a deficient number, since it is larger than the sum of its proper divisors (3729307).

30972293 is a wasteful number, since it uses less digits than its factorization.

30972293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76147.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 30972293 is about 5565.2756445660. The cubic root of 30972293 is about 314.0444478440.

The spelling of 30972293 in words is "thirty million, nine hundred seventy-two thousand, two hundred ninety-three".