28679432 has 8 divisors (see below), whose sum is σ = 53773950. Its totient is φ = 14339712.

The previous prime is 28679429. The next prime is 28679461. The reversal of 28679432 is 23497682.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27730756 + 948676 = 5266^2 + 974^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28679432.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1792457 + ... + 1792472.

Almost surely, 2^28679432 is an apocalyptic number.

It is an amenable number.

28679432 is a deficient number, since it is larger than the sum of its proper divisors (25094518).

28679432 is a wasteful number, since it uses less digits than its factorization.

28679432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584935 (or 3584931 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 28679432 is about 5355.3181044640. The cubic root of 28679432 is about 306.0954320939.

The spelling of 28679432 in words is "twenty-eight million, six hundred seventy-nine thousand, four hundred thirty-two".