28627131 has 16 divisors (see below), whose sum is σ = 41216000. Its totient is φ = 17569440.

The previous prime is 28627127. The next prime is 28627163. The reversal of 28627131 is 13172682.

It is not a de Polignac number, because 28627131 - 2² = 28627127 is a prime.

It is a super-2 number, since 2×28627131² = 1639025258582322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28627171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18726 + ... + 20196.

It is an arithmetic number, because the mean of its divisors is an integer number (2576000).

Almost surely, 2^28627131 is an apocalyptic number.

28627131 is a deficient number, since it is larger than the sum of its proper divisors (12588869).

28627131 is a wasteful number, since it uses less digits than its factorization.

28627131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986.

The product of its digits is 4032, while the sum is 30.

The square root of 28627131 is about 5350.4327862333. The cubic root of 28627131 is about 305.9092494354.

The spelling of 28627131 in words is "twenty-eight million, six hundred twenty-seven thousand, one hundred thirty-one".