30155328 has 168 divisors, whose sum is σ = 102811072. Its totient is φ = 8584704.

The previous prime is 30155303. The next prime is 30155387. The reversal of 30155328 is 82355103.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108726 + ... + 109002.

Almost surely, 2^30155328 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 30155328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51405536).

30155328 is an abundant number, since it is smaller than the sum of its proper divisors (72655744).

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

30155328 is an equidigital number, since it uses as much as digits as its factorization.

30155328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 30155328 is about 5491.3867101125. The cubic root of 30155328 is about 311.2585946240.

The spelling of 30155328 in words is "thirty million, one hundred fifty-five thousand, three hundred twenty-eight".