30597228 has 18 divisors (see below), whose sum is σ = 77343084. Its totient is φ = 10199064.

The previous prime is 30597227. The next prime is 30597251. The reversal of 30597228 is 82279503.

It is a happy number.

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

It is a super-2 number, since 2×30597228² = 1872380722567968, which contains 22 as substring.

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: 849923 = 30597228 / (3 + 0 + 5 + 9 + 7 + 2 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 30597192 and 30597201.

It is not an unprimeable number, because it can be changed into a prime (30597227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424926 + ... + 424997.

It is an arithmetic number, because the mean of its divisors is an integer number (4296838).

Almost surely, 2^30597228 is an apocalyptic number.

It is an amenable number.

30597228 is an abundant number, since it is smaller than the sum of its proper divisors (46745856).

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

30597228 is a wasteful number, since it uses less digits than its factorization.

30597228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849933 (or 849928 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 30597228 is about 5531.4761140224. The cubic root of 30597228 is about 312.7716353904.

The spelling of 30597228 in words is "thirty million, five hundred ninety-seven thousand, two hundred twenty-eight".