30355208 has 16 divisors (see below), whose sum is σ = 61294380. Its totient is φ = 14010048.

The previous prime is 30355201. The next prime is 30355223. The reversal of 30355208 is 80255303.

It can be written as a sum of positive squares in 2 ways, for example, as 28111204 + 2244004 = 5302^2 + 1498^2 .

It is a super-3 number, since 3×30355208³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (30355201) 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, 145835 + ... + 146042.

Almost surely, 2^30355208 is an apocalyptic number.

It is an amenable number.

30355208 is an abundant number, since it is smaller than the sum of its proper divisors (30939172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30355208 is a wasteful number, since it uses less digits than its factorization.

30355208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291896 (or 291892 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 30355208 is about 5509.5560619709. The cubic root of 30355208 is about 311.9447908010.

The spelling of 30355208 in words is "thirty million, three hundred fifty-five thousand, two hundred eight".