28651954 has 4 divisors (see below), whose sum is σ = 42977934. Its totient is φ = 14325976.

The previous prime is 28651939. The next prime is 28651963. The reversal of 28651954 is 45915682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22819729 + 5832225 = 4777^2 + 2415^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7162987 + ... + 7162990.

Almost surely, 2^28651954 is an apocalyptic number.

28651954 is a deficient number, since it is larger than the sum of its proper divisors (14325980).

28651954 is a wasteful number, since it uses less digits than its factorization.

28651954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14325979.

The product of its digits is 86400, while the sum is 40.

The square root of 28651954 is about 5352.7520024750. The cubic root of 28651954 is about 305.9976433384.

The spelling of 28651954 in words is "twenty-eight million, six hundred fifty-one thousand, nine hundred fifty-four".