28114722 has 32 divisors (see below), whose sum is σ = 63365760. Its totient is φ = 9238320.

The previous prime is 28114721. The next prime is 28114747. The reversal of 28114722 is 22741182.

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

It is not an unprimeable number, because it can be changed into a prime (28114721) 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, 168 + ... + 7500.

It is an arithmetic number, because the mean of its divisors is an integer number (1980180).

Almost surely, 2^28114722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28114722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31682880).

28114722 is an abundant number, since it is smaller than the sum of its proper divisors (35251038).

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

28114722 is a wasteful number, since it uses less digits than its factorization.

28114722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7415 (or 7409 counting only the distinct ones).

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

The square root of 28114722 is about 5302.3317512204. The cubic root of 28114722 is about 304.0730506003.

The spelling of 28114722 in words is "twenty-eight million, one hundred fourteen thousand, seven hundred twenty-two".