1026665628 has 24 divisors (see below), whose sum is σ = 2499708288. Its totient is φ = 327342576.

The previous prime is 1026665621. The next prime is 1026665639. The reversal of 1026665628 is 8265666201.

It is a super-4 number, since 4×1026665628⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1026665628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026665621) 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, 1859626 + ... + 1860177.

It is an arithmetic number, because the mean of its divisors is an integer number (104154512).

Almost surely, 2^1026665628 is an apocalyptic number.

It is an amenable number.

1026665628 is an abundant number, since it is smaller than the sum of its proper divisors (1473042660).

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

1026665628 is a wasteful number, since it uses less digits than its factorization.

1026665628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719833 (or 3719831 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1026665628 is about 32041.6233671142. The cubic root of 1026665628 is about 1008.8106864844.

The spelling of 1026665628 in words is "one billion, twenty-six million, six hundred sixty-five thousand, six hundred twenty-eight".