30252861 has 6 divisors (see below), whose sum is σ = 43698590. Its totient is φ = 20168568.

The previous prime is 30252853. The next prime is 30252863. The reversal of 30252861 is 16825203.

It can be written as a sum of positive squares in only one way, i.e., 25190361 + 5062500 = 5019^2 + 2250^2 .

It is not a de Polignac number, because 30252861 - 2³ = 30252853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30252863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1680706 + ... + 1680723.

Almost surely, 2^30252861 is an apocalyptic number.

It is an amenable number.

30252861 is a deficient number, since it is larger than the sum of its proper divisors (13445729).

30252861 is a wasteful number, since it uses less digits than its factorization.

30252861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361435 (or 3361432 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30252861 is about 5500.2600847596. The cubic root of 30252861 is about 311.5938069587.

It can be divided in two parts, 30252 and 861, that added together give a palindrome (31113).

The spelling of 30252861 in words is "thirty million, two hundred fifty-two thousand, eight hundred sixty-one".