30481208 has 8 divisors (see below), whose sum is σ = 57152280. Its totient is φ = 15240600.

The previous prime is 30481207. The next prime is 30481237. The reversal of 30481208 is 80218403.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×30481208² = 1858208082278528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30481207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1905068 + ... + 1905083.

It is an arithmetic number, because the mean of its divisors is an integer number (7144035).

Almost surely, 2^30481208 is an apocalyptic number.

It is an amenable number.

30481208 is a deficient number, since it is larger than the sum of its proper divisors (26671072).

30481208 is a wasteful number, since it uses less digits than its factorization.

30481208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810157 (or 3810153 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 30481208 is about 5520.9788987099. The cubic root of 30481208 is about 312.3758072903.

The spelling of 30481208 in words is "thirty million, four hundred eighty-one thousand, two hundred eight".