30992545 has 8 divisors (see below), whose sum is σ = 37893096. Its totient is φ = 24326016.

The previous prime is 30992509. The next prime is 30992573. The reversal of 30992545 is 54529903.

It can be written as a sum of positive squares in 4 ways, for example, as 1648656 + 29343889 = 1284^2 + 5417^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30992545 - 2²³ = 22603937 is a prime.

It is a Duffinian 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, 58212 + ... + 58741.

It is an arithmetic number, because the mean of its divisors is an integer number (4736637).

Almost surely, 2^30992545 is an apocalyptic number.

It is an amenable number.

30992545 is a deficient number, since it is larger than the sum of its proper divisors (6900551).

30992545 is a wasteful number, since it uses less digits than its factorization.

30992545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117011.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 30992545 is about 5567.0948438122. The cubic root of 30992545 is about 314.1128815076.

The spelling of 30992545 in words is "thirty million, nine hundred ninety-two thousand, five hundred forty-five".