1016726420 has 12 divisors (see below), whose sum is σ = 2135125524. Its totient is φ = 406690560.

The previous prime is 1016726393. The next prime is 1016726449. The reversal of 1016726420 is 246276101.

It can be written as a sum of positive squares in 2 ways, for example, as 456078736 + 560647684 = 21356^2 + 23678^2 .

It is a super-2 number, since 2×1016726420² = 2067465226252032800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25418141 + ... + 25418180.

It is an arithmetic number, because the mean of its divisors is an integer number (177927127).

Almost surely, 2^1016726420 is an apocalyptic number.

1016726420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1016726420 is an abundant number, since it is smaller than the sum of its proper divisors (1118399104).

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

1016726420 is a wasteful number, since it uses less digits than its factorization.

1016726420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50836330 (or 50836328 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1016726420 is about 31886.1477761112. The cubic root of 1016726420 is about 1005.5446731127.

The spelling of 1016726420 in words is "one billion, sixteen million, seven hundred twenty-six thousand, four hundred twenty".