28141722 has 32 divisors (see below), whose sum is σ = 71472000. Its totient is φ = 8040384.

The previous prime is 28141721. The next prime is 28141727. The reversal of 28141722 is 22714182.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28141721) 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 15 ways as a sum of consecutive naturals, for example, 36847 + ... + 37602.

It is an arithmetic number, because the mean of its divisors is an integer number (2233500).

Almost surely, 2^28141722 is an apocalyptic number.

28141722 is an abundant number, since it is smaller than the sum of its proper divisors (43330278).

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

28141722 is a wasteful number, since it uses less digits than its factorization.

28141722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74467 (or 74461 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 28141722 is about 5304.8771899074. The cubic root of 28141722 is about 304.1703584048.

The spelling of 28141722 in words is "twenty-eight million, one hundred forty-one thousand, seven hundred twenty-two".