30468861 has 12 divisors (see below), whose sum is σ = 44307900. Its totient is φ = 20175360.

The previous prime is 30468857. The next prime is 30468887. The reversal of 30468861 is 16886403.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7371225 + 23097636 = 2715^2 + 4806^2 .

It is not a de Polignac number, because 30468861 - 2² = 30468857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30468161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10020 + ... + 12701.

It is an arithmetic number, because the mean of its divisors is an integer number (3692325).

Almost surely, 2^30468861 is an apocalyptic number.

It is an amenable number.

30468861 is a deficient number, since it is larger than the sum of its proper divisors (13839039).

30468861 is a wasteful number, since it uses less digits than its factorization.

30468861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22876 (or 22873 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 30468861 is about 5519.8605960658. The cubic root of 30468861 is about 312.3336236496. Note that the first 3 decimals are identical.

It can be divided in two parts, 30468 and 861, that added together give a square (31329 = 177²).

The spelling of 30468861 in words is "thirty million, four hundred sixty-eight thousand, eight hundred sixty-one".