28516722 has 24 divisors (see below), whose sum is σ = 61760304. Its totient is φ = 8774064.

The previous prime is 28516717. The next prime is 28516727. The reversal of 28516722 is 22761582.

It is an interprime number because it is at equal distance from previous prime (28516717) and next prime (28516727).

It is not an unprimeable number, because it can be changed into a prime (28516727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13048 + ... + 15075.

It is an arithmetic number, because the mean of its divisors is an integer number (2573346).

Almost surely, 2^28516722 is an apocalyptic number.

28516722 is an abundant number, since it is smaller than the sum of its proper divisors (33243582).

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

28516722 is a wasteful number, since it uses less digits than its factorization.

28516722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28154 (or 28141 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 28516722 is about 5340.1050551464. The cubic root of 28516722 is about 305.5154662458.

The spelling of 28516722 in words is "twenty-eight million, five hundred sixteen thousand, seven hundred twenty-two".