28655714 has 4 divisors (see below), whose sum is σ = 42983574. Its totient is φ = 14327856.

The previous prime is 28655713. The next prime is 28655719. The reversal of 28655714 is 41755682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 5452225 = 4817^2 + 2335^2 .

It is a super-2 number, since 2×28655714² = 1642299889699592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28655713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7163927 + ... + 7163930.

Almost surely, 2^28655714 is an apocalyptic number.

28655714 is a deficient number, since it is larger than the sum of its proper divisors (14327860).

28655714 is a wasteful number, since it uses less digits than its factorization.

28655714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14327859.

The product of its digits is 67200, while the sum is 38.

The square root of 28655714 is about 5353.1032121565. The cubic root of 28655714 is about 306.0110281243.

The spelling of 28655714 in words is "twenty-eight million, six hundred fifty-five thousand, seven hundred fourteen".