30477228 has 24 divisors (see below), whose sum is σ = 72176832. Its totient is φ = 10007184.

The previous prime is 30477221. The next prime is 30477257. The reversal of 30477228 is 82277403.

It is a super-3 number, since 3×30477228³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (30477221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18150 + ... + 19757.

It is an arithmetic number, because the mean of its divisors is an integer number (3007368).

Almost surely, 2^30477228 is an apocalyptic number.

It is an amenable number.

30477228 is an abundant number, since it is smaller than the sum of its proper divisors (41699604).

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

30477228 is a wasteful number, since it uses less digits than its factorization.

30477228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37981 (or 37979 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 30477228 is about 5520.6184436166. The cubic root of 30477228 is about 312.3622108275.

The spelling of 30477228 in words is "thirty million, four hundred seventy-seven thousand, two hundred twenty-eight".