28978035 has 16 divisors (see below), whose sum is σ = 46551456. Its totient is φ = 15392768.

The previous prime is 28978003. The next prime is 28978073. The reversal of 28978035 is 53087982.

It is a cyclic number.

It is not a de Polignac number, because 28978035 - 2⁵ = 28978003 is a prime.

It is a super-2 number, since 2×28978035² = 1679453024922450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (2909466).

Almost surely, 2^28978035 is an apocalyptic number.

28978035 is a deficient number, since it is larger than the sum of its proper divisors (17573421).

28978035 is a wasteful number, since it uses less digits than its factorization.

28978035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 28978035 is about 5383.1250217694. The cubic root of 28978035 is about 307.1540958055.

The spelling of 28978035 in words is "twenty-eight million, nine hundred seventy-eight thousand, thirty-five".