30146461 has 4 divisors (see below), whose sum is σ = 30320892. Its totient is φ = 29972032.

The previous prime is 30146447. The next prime is 30146471. The reversal of 30146461 is 16464103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16464103 = 307 ⋅53629.

It can be written as a sum of positive squares in 2 ways, for example, as 24810361 + 5336100 = 4981^2 + 2310^2 .

It is a cyclic number.

It is not a de Polignac number, because 30146461 - 2⁹ = 30145949 is a prime.

It is a super-2 number, since 2×30146461² = 1817618221649042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30146401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86956 + ... + 87301.

It is an arithmetic number, because the mean of its divisors is an integer number (7580223).

Almost surely, 2^30146461 is an apocalyptic number.

It is an amenable number.

30146461 is a deficient number, since it is larger than the sum of its proper divisors (174431).

30146461 is a wasteful number, since it uses less digits than its factorization.

30146461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174430.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 30146461 is about 5490.5792954842. The cubic root of 30146461 is about 311.2280837028.

The spelling of 30146461 in words is "thirty million, one hundred forty-six thousand, four hundred sixty-one".