28371001 has 8 divisors (see below), whose sum is σ = 28789704. Its totient is φ = 27955200.

The previous prime is 28370989. The next prime is 28371037. The reversal of 28371001 is 10017382.

It can be written as a sum of positive squares in 4 ways, for example, as 26988025 + 1382976 = 5195^2 + 1176^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28371001 - 2²³ = 19982393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28371071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25411 + ... + 26503.

It is an arithmetic number, because the mean of its divisors is an integer number (3598713).

Almost surely, 2^28371001 is an apocalyptic number.

It is an amenable number.

28371001 is a deficient number, since it is larger than the sum of its proper divisors (418703).

28371001 is a wasteful number, since it uses less digits than its factorization.

28371001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 28371001 is about 5326.4435602004. The cubic root of 28371001 is about 304.9941806647.

Adding to 28371001 its reverse (10017382), we get a palindrome (38388383).

The spelling of 28371001 in words is "twenty-eight million, three hundred seventy-one thousand, one".