30542445 has 12 divisors (see below), whose sum is σ = 52940316. Its totient is φ = 16289280.

The previous prime is 30542441. The next prime is 30542497. The reversal of 30542445 is 54424503.

It can be written as a sum of positive squares in 2 ways, for example, as 5171076 + 25371369 = 2274^2 + 5037^2 .

It is not a de Polignac number, because 30542445 - 2² = 30542441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339316 + ... + 339405.

It is an arithmetic number, because the mean of its divisors is an integer number (4411693).

Almost surely, 2^30542445 is an apocalyptic number.

It is an amenable number.

30542445 is a deficient number, since it is larger than the sum of its proper divisors (22397871).

30542445 is a wasteful number, since it uses less digits than its factorization.

30542445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678732 (or 678729 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 30542445 is about 5526.5219623195. The cubic root of 30542445 is about 312.5848558896.

Adding to 30542445 its reverse (54424503), we get a palindrome (84966948).

The spelling of 30542445 in words is "thirty million, five hundred forty-two thousand, four hundred forty-five".