30237145 has 12 divisors (see below), whose sum is σ = 36692460. Its totient is φ = 23920704.

The previous prime is 30237139. The next prime is 30237161. The reversal of 30237145 is 54173203.

It can be written as a sum of positive squares in 6 ways, for example, as 2653641 + 27583504 = 1629^2 + 5252^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30237145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59151 + ... + 59659.

It is an arithmetic number, because the mean of its divisors is an integer number (3057705).

Almost surely, 2^30237145 is an apocalyptic number.

It is an amenable number.

30237145 is a deficient number, since it is larger than the sum of its proper divisors (6455315).

30237145 is an equidigital number, since it uses as much as digits as its factorization.

30237145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 30237145 is about 5498.8312394544. The cubic root of 30237145 is about 311.5398411923.

The spelling of 30237145 in words is "thirty million, two hundred thirty-seven thousand, one hundred forty-five".