28151301 has 4 divisors (see below), whose sum is σ = 37535072. Its totient is φ = 18767532.

The previous prime is 28151281. The next prime is 28151311. The reversal of 28151301 is 10315182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28151301 - 2¹⁰ = 28150277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28151311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4691881 + ... + 4691886.

It is an arithmetic number, because the mean of its divisors is an integer number (9383768).

Almost surely, 2^28151301 is an apocalyptic number.

It is an amenable number.

28151301 is a deficient number, since it is larger than the sum of its proper divisors (9383771).

28151301 is an equidigital number, since it uses as much as digits as its factorization.

28151301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9383770.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 28151301 is about 5305.7799615137. The cubic root of 28151301 is about 304.2048660934.

Adding to 28151301 its reverse (10315182), we get a palindrome (38466483).

The spelling of 28151301 in words is "twenty-eight million, one hundred fifty-one thousand, three hundred one".