7028657790 has 256 divisors, whose sum is σ = 21897216000. Its totient is φ = 1401039360.

The previous prime is 7028657789. The next prime is 7028657809. The reversal of 7028657790 is 977568207.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 16010391 + ... + 16010829.

It is an arithmetic number, because the mean of its divisors is an integer number (85536000).

Almost surely, 2^7028657790 is an apocalyptic number.

7028657790 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7028657790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10948608000).

7028657790 is an abundant number, since it is smaller than the sum of its proper divisors (14868558210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7028657790 is a wasteful number, since it uses less digits than its factorization.

7028657790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its (nonzero) digits is 1481760, while the sum is 51.

The square root of 7028657790 is about 83837.0907772926. The cubic root of 7028657790 is about 1915.5381227158.

The spelling of 7028657790 in words is "seven billion, twenty-eight million, six hundred fifty-seven thousand, seven hundred ninety".