30828877 has 2 divisors, whose sum is σ = 30828878. Its totient is φ = 30828876.

The previous prime is 30828859. The next prime is 30828883. The reversal of 30828877 is 77882803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29800681 + 1028196 = 5459^2 + 1014^2 .

It is a cyclic number.

It is not a de Polignac number, because 30828877 - 2²³ = 22440269 is a prime.

It is a super-2 number, since 2×30828877² = 1900839314162258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30828817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15414438 + 15414439.

It is an arithmetic number, because the mean of its divisors is an integer number (15414439).

Almost surely, 2^30828877 is an apocalyptic number.

It is an amenable number.

30828877 is a deficient number, since it is larger than the sum of its proper divisors (1).

30828877 is an equidigital number, since it uses as much as digits as its factorization.

30828877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 30828877 is about 5552.3757978004. The cubic root of 30828877 is about 313.5589742087.

The spelling of 30828877 in words is "thirty million, eight hundred twenty-eight thousand, eight hundred seventy-seven".