28532634 has 32 divisors (see below), whose sum is σ = 62309184. Its totient is φ = 8657280.

The previous prime is 28532629. The next prime is 28532639. The reversal of 28532634 is 43623582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28532629) and next prime (28532639).

It is a super-2 number, since 2×28532634² = 1628222405955912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28532595 and 28532604.

It is not an unprimeable number, because it can be changed into a prime (28532639) 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, 3189 + ... + 8199.

It is an arithmetic number, because the mean of its divisors is an integer number (1947162).

Almost surely, 2^28532634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28532634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31154592).

28532634 is an abundant number, since it is smaller than the sum of its proper divisors (33776550).

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

28532634 is a wasteful number, since it uses less digits than its factorization.

28532634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102.

The product of its digits is 34560, while the sum is 33.

The square root of 28532634 is about 5341.5947057035. The cubic root of 28532634 is about 305.5722803750.

The spelling of 28532634 in words is "twenty-eight million, five hundred thirty-two thousand, six hundred thirty-four".