30670081 has 8 divisors (see below), whose sum is σ = 34168680. Its totient is φ = 27334272.

The previous prime is 30670069. The next prime is 30670099. The reversal of 30670081 is 18007603.

It can be written as a sum of positive squares in 4 ways, for example, as 3837681 + 26832400 = 1959^2 + 5180^2 .

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 30670081 - 2⁵ = 30670049 is a prime.

It is a super-2 number, since 2×30670081² = 1881307737093122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30670061) 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, 40300 + ... + 41053.

It is an arithmetic number, because the mean of its divisors is an integer number (4271085).

Almost surely, 2^30670081 is an apocalyptic number.

It is an amenable number.

30670081 is a deficient number, since it is larger than the sum of its proper divisors (3498599).

30670081 is a wasteful number, since it uses less digits than its factorization.

30670081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81395.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 30670081 is about 5538.0575114385. The cubic root of 30670081 is about 313.0196784574.

Adding to 30670081 its reverse (18007603), we get a palindrome (48677684).

The spelling of 30670081 in words is "thirty million, six hundred seventy thousand, eighty-one".