30828511 has 12 divisors (see below), whose sum is σ = 36221808. Its totient is φ = 25702272.

The previous prime is 30828493. The next prime is 30828527. The reversal of 30828511 is 11582803.

It is not a de Polignac number, because 30828511 - 2⁹ = 30827999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30828511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30828541) 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, 7975 + ... + 11191.

It is an arithmetic number, because the mean of its divisors is an integer number (3018484).

Almost surely, 2^30828511 is an apocalyptic number.

30828511 is a deficient number, since it is larger than the sum of its proper divisors (5393297).

30828511 is an equidigital number, since it uses as much as digits as its factorization.

30828511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298 (or 3261 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 30828511 is about 5552.3428388384. The cubic root of 30828511 is about 313.5577333479.

The spelling of 30828511 in words is "thirty million, eight hundred twenty-eight thousand, five hundred eleven".