28204629 has 16 divisors (see below), whose sum is σ = 38169600. Its totient is φ = 18524016.

The previous prime is 28204621. The next prime is 28204643. The reversal of 28204629 is 92640282.

It is not a de Polignac number, because 28204629 - 2³ = 28204621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28204629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28204621) 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, 99522 + ... + 99804.

It is an arithmetic number, because the mean of its divisors is an integer number (2385600).

Almost surely, 2^28204629 is an apocalyptic number.

It is an amenable number.

28204629 is a deficient number, since it is larger than the sum of its proper divisors (9964971).

28204629 is a wasteful number, since it uses less digits than its factorization.

28204629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 28204629 is about 5310.8030466211. The cubic root of 28204629 is about 304.3968335879.

The spelling of 28204629 in words is "twenty-eight million, two hundred four thousand, six hundred twenty-nine".