30148945 has 8 divisors (see below), whose sum is σ = 36772200. Its totient is φ = 23723520.

The previous prime is 30148933. The next prime is 30148967. The reversal of 30148945 is 54984103.

It can be written as a sum of positive squares in 4 ways, for example, as 107584 + 30041361 = 328^2 + 5481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30148945 - 2⁵ = 30148913 is a prime.

It is a super-2 number, since 2×30148945² = 1817917769226050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30148945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49120 + ... + 49729.

It is an arithmetic number, because the mean of its divisors is an integer number (4596525).

Almost surely, 2^30148945 is an apocalyptic number.

It is an amenable number.

30148945 is a deficient number, since it is larger than the sum of its proper divisors (6623255).

30148945 is an equidigital number, since it uses as much as digits as its factorization.

30148945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98915.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 30148945 is about 5490.8054964641. The cubic root of 30148945 is about 311.2366316307.

The spelling of 30148945 in words is "thirty million, one hundred forty-eight thousand, nine hundred forty-five".