7828020623 has 4 divisors (see below), whose sum is σ = 7836447840. Its totient is φ = 7819593408.

The previous prime is 7828020619. The next prime is 7828020637. The reversal of 7828020623 is 3260208287.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7828020623 - 2² = 7828020619 is a prime.

It is a super-2 number, since 2×7828020623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7828020523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4212215 + ... + 4214072.

It is an arithmetic number, because the mean of its divisors is an integer number (1959111960).

Almost surely, 2^7828020623 is an apocalyptic number.

7828020623 is a deficient number, since it is larger than the sum of its proper divisors (8427217).

7828020623 is an equidigital number, since it uses as much as digits as its factorization.

7828020623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8427216.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 7828020623 is about 88476.1019880510. The cubic root of 7828020623 is about 1985.5644432809.

The spelling of 7828020623 in words is "seven billion, eight hundred twenty-eight million, twenty thousand, six hundred twenty-three".