147028001 has 4 divisors (see below), whose sum is σ = 147056004. Its totient is φ = 147000000.

The previous prime is 147027997. The next prime is 147028003. The reversal of 147028001 is 100820741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46226401 + 100801600 = 6799^2 + 10040^2 .

It is a cyclic number.

It is not a de Polignac number, because 147028001 - 2² = 147027997 is a prime.

It is a deceptive number, since it divides R_147028000.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (147028003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500 + ... + 17501.

It is an arithmetic number, because the mean of its divisors is an integer number (36764001).

It is a Poulet number, since it divides 2^147028000-1.

Almost surely, 2^147028001 is an apocalyptic number.

147028001 is the 7001-st octagonal number.

It is an amenable number.

147028001 is a deficient number, since it is larger than the sum of its proper divisors (28003).

147028001 is an equidigital number, since it uses as much as digits as its factorization.

147028001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28002.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 147028001 is about 12125.5103397754. The cubic root of 147028001 is about 527.7967166348.

Adding to 147028001 its reverse (100820741), we get a palindrome (247848742).

The spelling of 147028001 in words is "one hundred forty-seven million, twenty-eight thousand, one".