28820827 has 16 divisors (see below), whose sum is σ = 34034112. Its totient is φ = 23892480.

The previous prime is 28820819. The next prime is 28820833. The reversal of 28820827 is 72802882.

It is a cyclic number.

It is not a de Polignac number, because 28820827 - 2³ = 28820819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28820807) 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, 38953 + ... + 39685.

It is an arithmetic number, because the mean of its divisors is an integer number (2127132).

Almost surely, 2^28820827 is an apocalyptic number.

28820827 is a deficient number, since it is larger than the sum of its proper divisors (5213285).

28820827 is a wasteful number, since it uses less digits than its factorization.

28820827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 28820827 is about 5368.5032364710. The cubic root of 28820827 is about 306.5976437023.

It can be divided in two parts, 288 and 20827, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 28820827 in words is "twenty-eight million, eight hundred twenty thousand, eight hundred twenty-seven".