28624877 has 2 divisors, whose sum is σ = 28624878. Its totient is φ = 28624876.

The previous prime is 28624861. The next prime is 28624901. The reversal of 28624877 is 77842682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28526281 + 98596 = 5341^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 28624877 - 2⁴ = 28624861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28624807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14312438 + 14312439.

It is an arithmetic number, because the mean of its divisors is an integer number (14312439).

Almost surely, 2^28624877 is an apocalyptic number.

It is an amenable number.

28624877 is a deficient number, since it is larger than the sum of its proper divisors (1).

28624877 is an equidigital number, since it uses as much as digits as its factorization.

28624877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 44.

The square root of 28624877 is about 5350.2221449207. Note that the first 3 decimals coincide. The cubic root of 28624877 is about 305.9012204838.

The spelling of 28624877 in words is "twenty-eight million, six hundred twenty-four thousand, eight hundred seventy-seven".