28842132 has 48 divisors (see below), whose sum is σ = 77740992. Its totient is φ = 8225280.

The previous prime is 28842131. The next prime is 28842137. The reversal of 28842132 is 23124882.

It is a self number, because there is not a number n which added to its sum of digits gives 28842132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28842131) 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, 4183 + ... + 8670.

It is an arithmetic number, because the mean of its divisors is an integer number (1619604).

Almost surely, 2^28842132 is an apocalyptic number.

28842132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28842132 is an abundant number, since it is smaller than the sum of its proper divisors (48898860).

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

28842132 is a wasteful number, since it uses less digits than its factorization.

28842132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12888 (or 12886 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 28842132 is about 5370.4871287435. The cubic root of 28842132 is about 306.6731730399.

The spelling of 28842132 in words is "twenty-eight million, eight hundred forty-two thousand, one hundred thirty-two".