1028622811 has 8 divisors (see below), whose sum is σ = 1063682048. Its totient is φ = 993681000.

The previous prime is 1028622799. The next prime is 1028622821. The reversal of 1028622811 is 1182268201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1028622811 - 2⁹ = 1028622299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028622821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11355 + ... + 46756.

It is an arithmetic number, because the mean of its divisors is an integer number (132960256).

Almost surely, 2^1028622811 is an apocalyptic number.

1028622811 is a deficient number, since it is larger than the sum of its proper divisors (35059237).

1028622811 is an equidigital number, since it uses as much as digits as its factorization.

1028622811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58713.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1028622811 is about 32072.1500838344. The cubic root of 1028622811 is about 1009.4513279780.

The spelling of 1028622811 in words is "one billion, twenty-eight million, six hundred twenty-two thousand, eight hundred eleven".