30228445 has 16 divisors (see below), whose sum is σ = 40123440. Its totient is φ = 21717504.

The previous prime is 30228437. The next prime is 30228467. The reversal of 30228445 is 54482203.

It can be written as a sum of positive squares in 8 ways, for example, as 2802276 + 27426169 = 1674^2 + 5237^2 .

It is a cyclic number.

It is not a de Polignac number, because 30228445 - 2³ = 30228437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3880 + ... + 8689.

It is an arithmetic number, because the mean of its divisors is an integer number (2507715).

Almost surely, 2^30228445 is an apocalyptic number.

It is an amenable number.

30228445 is a deficient number, since it is larger than the sum of its proper divisors (9894995).

30228445 is a wasteful number, since it uses less digits than its factorization.

30228445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 30228445 is about 5498.0401053466. The cubic root of 30228445 is about 311.5099589992.

The spelling of 30228445 in words is "thirty million, two hundred twenty-eight thousand, four hundred forty-five".