28632292 has 12 divisors (see below), whose sum is σ = 53960956. Its totient is φ = 13214880.

The previous prime is 28632283. The next prime is 28632293. The reversal of 28632292 is 29223682.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 27206656 = 1194^2 + 5216^2 .

It is not an unprimeable number, because it can be changed into a prime (28632293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275259 + ... + 275362.

Almost surely, 2^28632292 is an apocalyptic number.

It is an amenable number.

28632292 is a deficient number, since it is larger than the sum of its proper divisors (25328664).

28632292 is a wasteful number, since it uses less digits than its factorization.

28632292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550638 (or 550636 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 28632292 is about 5350.9150619310. The cubic root of 28632292 is about 305.9276317964.

The spelling of 28632292 in words is "twenty-eight million, six hundred thirty-two thousand, two hundred ninety-two".