30638065 has 8 divisors (see below), whose sum is σ = 38033640. Its totient is φ = 23665152.

The previous prime is 30638057. The next prime is 30638077. The reversal of 30638065 is 56083603.

It can be written as a sum of positive squares in 4 ways, for example, as 6155361 + 24482704 = 2481^2 + 4948^2 .

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 30638065 - 2³ = 30638057 is a prime.

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, 105504 + ... + 105793.

It is an arithmetic number, because the mean of its divisors is an integer number (4754205).

Almost surely, 2^30638065 is an apocalyptic number.

It is an amenable number.

30638065 is a deficient number, since it is larger than the sum of its proper divisors (7395575).

30638065 is a wasteful number, since it uses less digits than its factorization.

30638065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211331.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 30638065 is about 5535.1662124999. The cubic root of 30638065 is about 312.9107218145.

The spelling of 30638065 in words is "thirty million, six hundred thirty-eight thousand, sixty-five".