28669704 has 48 divisors (see below), whose sum is σ = 83379600. Its totient is φ = 8191008.

The previous prime is 28669703. The next prime is 28669717. The reversal of 28669704 is 40796682.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (28669703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11014 + ... + 13365.

It is an arithmetic number, because the mean of its divisors is an integer number (1737075).

Almost surely, 2^28669704 is an apocalyptic number.

28669704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28669704 is an abundant number, since it is smaller than the sum of its proper divisors (54709896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28669704 is a wasteful number, since it uses less digits than its factorization.

28669704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24402 (or 24391 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 28669704 is about 5354.4097713940. The cubic root of 28669704 is about 306.0608192152.

The spelling of 28669704 in words is "twenty-eight million, six hundred sixty-nine thousand, seven hundred four".