28632522 has 16 divisors (see below), whose sum is σ = 60633792. Its totient is φ = 8982720.

The previous prime is 28632521. The next prime is 28632529. The reversal of 28632522 is 22523682.

It is a self number, because there is not a number n which added to its sum of digits gives 28632522.

It is not an unprimeable number, because it can be changed into a prime (28632521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140254 + ... + 140457.

It is an arithmetic number, because the mean of its divisors is an integer number (3789612).

Almost surely, 2^28632522 is an apocalyptic number.

28632522 is an abundant number, since it is smaller than the sum of its proper divisors (32001270).

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

28632522 is a wasteful number, since it uses less digits than its factorization.

28632522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280733.

The product of its digits is 11520, while the sum is 30.

The square root of 28632522 is about 5350.9365535390. The cubic root of 28632522 is about 305.9284509550.

The spelling of 28632522 in words is "twenty-eight million, six hundred thirty-two thousand, five hundred twenty-two".