30682145 has 32 divisors (see below), whose sum is σ = 42124320. Its totient is φ = 21288960.

The previous prime is 30682133. The next prime is 30682163. The reversal of 30682145 is 54128603.

It can be written as a sum of positive squares in 16 ways, for example, as 17073424 + 13608721 = 4132^2 + 3689^2 .

It is not a de Polignac number, because 30682145 - 2⁴ = 30682129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77087 + ... + 77483.

It is an arithmetic number, because the mean of its divisors is an integer number (1316385).

Almost surely, 2^30682145 is an apocalyptic number.

It is an amenable number.

30682145 is a deficient number, since it is larger than the sum of its proper divisors (11442175).

30682145 is a wasteful number, since it uses less digits than its factorization.

30682145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 30682145 is about 5539.1465949188. The cubic root of 30682145 is about 313.0607149144.

The spelling of 30682145 in words is "thirty million, six hundred eighty-two thousand, one hundred forty-five".