1020023885 has 8 divisors (see below), whose sum is σ = 1296030456. Its totient is φ = 768017920.

The previous prime is 1020023869. The next prime is 1020023887. The reversal of 1020023885 is 5883200201.

1020023885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6620329 + 1013403556 = 2573^2 + 31834^2 .

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

It is not a de Polignac number, because 1020023885 - 2⁴ = 1020023869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020023887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6000056 + ... + 6000225.

It is an arithmetic number, because the mean of its divisors is an integer number (162003807).

Almost surely, 2^1020023885 is an apocalyptic number.

It is an amenable number.

1020023885 is a deficient number, since it is larger than the sum of its proper divisors (276006571).

1020023885 is a wasteful number, since it uses less digits than its factorization.

1020023885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12000303.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1020023885 is about 31937.8127773334. The cubic root of 1020023885 is about 1006.6305667483.

The spelling of 1020023885 in words is "one billion, twenty million, twenty-three thousand, eight hundred eighty-five".