30644413 has 4 divisors (see below), whose sum is σ = 30675168. Its totient is φ = 30613660.

The previous prime is 30644407. The next prime is 30644429. The reversal of 30644413 is 31444603.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31444603 = 1063 ⋅29581.

It is a cyclic number.

It is not a de Polignac number, because 30644413 - 2⁹ = 30643901 is a prime.

It is a super-2 number, since 2×30644413² = 1878160096229138, 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 (30644443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13831 + ... + 15892.

It is an arithmetic number, because the mean of its divisors is an integer number (7668792).

Almost surely, 2^30644413 is an apocalyptic number.

It is an amenable number.

30644413 is a deficient number, since it is larger than the sum of its proper divisors (30755).

30644413 is a wasteful number, since it uses less digits than its factorization.

30644413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30754.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 30644413 is about 5535.7396073154. The cubic root of 30644413 is about 312.9323313177.

The spelling of 30644413 in words is "thirty million, six hundred forty-four thousand, four hundred thirteen".