1026428020 has 12 divisors (see below), whose sum is σ = 2155498884. Its totient is φ = 410571200.

The previous prime is 1026427999. The next prime is 1026428027. The reversal of 1026428020 is 208246201.

It is a happy number.

1026428020 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 2 ways, for example, as 728244196 + 298183824 = 26986^2 + 17268^2 .

It is a super-2 number, since 2×1026428020² = 2107108960482240800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026428027) 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, 25660681 + ... + 25660720.

It is an arithmetic number, because the mean of its divisors is an integer number (179624907).

Almost surely, 2^1026428020 is an apocalyptic number.

1026428020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1026428020 is an abundant number, since it is smaller than the sum of its proper divisors (1129070864).

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

1026428020 is a wasteful number, since it uses less digits than its factorization.

1026428020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51321410 (or 51321408 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1026428020 is about 32037.9153504094. The cubic root of 1026428020 is about 1008.7328552421.

The spelling of 1026428020 in words is "one billion, twenty-six million, four hundred twenty-eight thousand, twenty".