828220747 has 2 divisors, whose sum is σ = 828220748. Its totient is φ = 828220746.

The previous prime is 828220733. The next prime is 828220781. The reversal of 828220747 is 747022828.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828220747 is a prime.

It is a super-2 number, since 2×828220747² = 1371899211522476018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (828220727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414110373 + 414110374.

It is an arithmetic number, because the mean of its divisors is an integer number (414110374).

Almost surely, 2^828220747 is an apocalyptic number.

828220747 is a deficient number, since it is larger than the sum of its proper divisors (1).

828220747 is an equidigital number, since it uses as much as digits as its factorization.

828220747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 828220747 is about 28778.8246285355. The cubic root of 828220747 is about 939.1076286667.

The spelling of 828220747 in words is "eight hundred twenty-eight million, two hundred twenty thousand, seven hundred forty-seven".