30155356 has 48 divisors (see below), whose sum is σ = 69269760. Its totient is φ = 11128320.

The previous prime is 30155303. The next prime is 30155387. The reversal of 30155356 is 65355103.

30155356 = T₁₀₀₀ + T₁₀₀₁ + ... + T₁₀₅₆.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3276 + ... + 8428.

It is an arithmetic number, because the mean of its divisors is an integer number (1443120).

Almost surely, 2^30155356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30155356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34634880).

30155356 is an abundant number, since it is smaller than the sum of its proper divisors (39114404).

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

30155356 is a wasteful number, since it uses less digits than its factorization.

30155356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194 (or 5192 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 30155356 is about 5491.3892595590. The cubic root of 30155356 is about 311.2586909612.

The spelling of 30155356 in words is "thirty million, one hundred fifty-five thousand, three hundred fifty-six".