30620081 has 8 divisors (see below), whose sum is σ = 30987264. Its totient is φ = 30255120.

The previous prime is 30620063. The next prime is 30620089. The reversal of 30620081 is 18002603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30620081 is a prime.

It is a super-2 number, since 2×30620081² = 1875178720893122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30620089) 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, 58286 + ... + 58808.

It is an arithmetic number, because the mean of its divisors is an integer number (3873408).

Almost surely, 2^30620081 is an apocalyptic number.

It is an amenable number.

30620081 is a deficient number, since it is larger than the sum of its proper divisors (367183).

30620081 is a wasteful number, since it uses less digits than its factorization.

30620081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 30620081 is about 5533.5414519094. The cubic root of 30620081 is about 312.8494854860.

Adding to 30620081 its reverse (18002603), we get a palindrome (48622684).

The spelling of 30620081 in words is "thirty million, six hundred twenty thousand, eighty-one".