28083678 has 32 divisors (see below), whose sum is σ = 64515840. Its totient is φ = 7983360.

The previous prime is 28083673. The next prime is 28083697. The reversal of 28083678 is 87638082.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28083673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7278 + ... + 10446.

It is an arithmetic number, because the mean of its divisors is an integer number (2016120).

Almost surely, 2^28083678 is an apocalyptic number.

28083678 is an abundant number, since it is smaller than the sum of its proper divisors (36432162).

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

28083678 is a wasteful number, since it uses less digits than its factorization.

28083678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 28083678 is about 5299.4035513442. The cubic root of 28083678 is about 303.9610912230.

The spelling of 28083678 in words is "twenty-eight million, eighty-three thousand, six hundred seventy-eight".