28626429 has 16 divisors (see below), whose sum is σ = 41385344. Its totient is φ = 17496000.

The previous prime is 28626427. The next prime is 28626443. The reversal of 28626429 is 92462682.

It is not a de Polignac number, because 28626429 - 2¹ = 28626427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28626427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3459 + ... + 8319.

It is an arithmetic number, because the mean of its divisors is an integer number (2586584).

Almost surely, 2^28626429 is an apocalyptic number.

It is an amenable number.

28626429 is a deficient number, since it is larger than the sum of its proper divisors (12758915).

28626429 is a wasteful number, since it uses less digits than its factorization.

28626429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028.

The product of its digits is 82944, while the sum is 39.

The square root of 28626429 is about 5350.3671836613. The cubic root of 28626429 is about 305.9067488932.

The spelling of 28626429 in words is "twenty-eight million, six hundred twenty-six thousand, four hundred twenty-nine".