30992973 has 8 divisors (see below), whose sum is σ = 45080736. Its totient is φ = 18783600.

The previous prime is 30992959. The next prime is 30992987. The reversal of 30992973 is 37929903.

It is an interprime number because it is at equal distance from previous prime (30992959) and next prime (30992987).

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

It is not a de Polignac number, because 30992973 - 2⁹ = 30992461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30992903) 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, 469558 + ... + 469623.

It is an arithmetic number, because the mean of its divisors is an integer number (5635092).

Almost surely, 2^30992973 is an apocalyptic number.

30992973 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30992973 is a deficient number, since it is larger than the sum of its proper divisors (14087763).

30992973 is a wasteful number, since it uses less digits than its factorization.

30992973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939195.

The product of its (nonzero) digits is 91854, while the sum is 42.

The square root of 30992973 is about 5567.1332838365. The cubic root of 30992973 is about 314.1143274435.

The spelling of 30992973 in words is "thirty million, nine hundred ninety-two thousand, nine hundred seventy-three".