30270745 has 8 divisors (see below), whose sum is σ = 36467784. Its totient is φ = 24121344.

The previous prime is 30270733. The next prime is 30270749. The reversal of 30270745 is 54707203.

It can be written as a sum of positive squares in 4 ways, for example, as 2350089 + 27920656 = 1533^2 + 5284^2 .

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 30270745 - 2¹³ = 30262553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30270749) 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, 10494 + ... + 13063.

It is an arithmetic number, because the mean of its divisors is an integer number (4558473).

Almost surely, 2^30270745 is an apocalyptic number.

It is an amenable number.

30270745 is a deficient number, since it is larger than the sum of its proper divisors (6197039).

30270745 is a wasteful number, since it uses less digits than its factorization.

30270745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23819.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 30270745 is about 5501.8855858696. The cubic root of 30270745 is about 311.6551944964.

Adding to 30270745 its reverse (54707203), we get a palindrome (84977948).

The spelling of 30270745 in words is "thirty million, two hundred seventy thousand, seven hundred forty-five".