30028461 has 4 divisors (see below), whose sum is σ = 40037952. Its totient is φ = 20018972.

The previous prime is 30028457. The next prime is 30028483. The reversal of 30028461 is 16482003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30028461 - 2² = 30028457 is a prime.

It is a super-3 number, since 3×30028461³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5004741 + ... + 5004746.

It is an arithmetic number, because the mean of its divisors is an integer number (10009488).

Almost surely, 2^30028461 is an apocalyptic number.

It is an amenable number.

30028461 is a deficient number, since it is larger than the sum of its proper divisors (10009491).

30028461 is a wasteful number, since it uses less digits than its factorization.

30028461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009490.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 30028461 is about 5479.8230810857. The cubic root of 30028461 is about 310.8214805876.

The spelling of 30028461 in words is "thirty million, twenty-eight thousand, four hundred sixty-one".