30555396 has 18 divisors (see below), whose sum is σ = 77237342. Its totient is φ = 10185120.

The previous prime is 30555389. The next prime is 30555407. The reversal of 30555396 is 69355503.

It can be written as a sum of positive squares in only one way, i.e., 28196100 + 2359296 = 5310^2 + 1536^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 848761 = 30555396 / (3 + 0 + 5 + 5 + 5 + 3 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 30555396.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424345 + ... + 424416.

Almost surely, 2^30555396 is an apocalyptic number.

30555396 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30555396 is an abundant number, since it is smaller than the sum of its proper divisors (46681946).

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

30555396 is a wasteful number, since it uses less digits than its factorization.

30555396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848771 (or 848766 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 36.

The square root of 30555396 is about 5527.6935515638. The cubic root of 30555396 is about 312.6290317286.

The spelling of 30555396 in words is "thirty million, five hundred fifty-five thousand, three hundred ninety-six".