28540802 has 8 divisors (see below), whose sum is σ = 43513212. Its totient is φ = 14036400.

The previous prime is 28540789. The next prime is 28540823. The reversal of 28540802 is 20804582.

It can be written as a sum of positive squares in 2 ways, for example, as 27994681 + 546121 = 5291^2 + 739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116849 + ... + 117092.

Almost surely, 2^28540802 is an apocalyptic number.

28540802 is a deficient number, since it is larger than the sum of its proper divisors (14972410).

28540802 is a wasteful number, since it uses less digits than its factorization.

28540802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234004.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 28540802 is about 5342.3592166757. The cubic root of 28540802 is about 305.6014361861.

The spelling of 28540802 in words is "twenty-eight million, five hundred forty thousand, eight hundred two".