28301634 has 24 divisors (see below), whose sum is σ = 64927980. Its totient is φ = 8878848.

The previous prime is 28301627. The next prime is 28301639. The reversal of 28301634 is 43610382.

It is a happy number.

28301634 is a `hidden beast` number, since 28 + 3 + 0 + 1 + 634 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26471025 + 1830609 = 5145^2 + 1353^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28301598 and 28301607.

It is not an unprimeable number, because it can be changed into a prime (28301639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45939 + ... + 46550.

Almost surely, 2^28301634 is an apocalyptic number.

28301634 is an abundant number, since it is smaller than the sum of its proper divisors (36626346).

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

28301634 is a wasteful number, since it uses less digits than its factorization.

28301634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92514 (or 92511 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 28301634 is about 5319.9280070317. The cubic root of 28301634 is about 304.7454078969.

The spelling of 28301634 in words is "twenty-eight million, three hundred one thousand, six hundred thirty-four".