1026275440 has 40 divisors (see below), whose sum is σ = 2398239360. Its totient is φ = 408420096.

The previous prime is 1026275359. The next prime is 1026275473. The reversal of 1026275440 is 445726201.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16800 + ... + 48319.

It is an arithmetic number, because the mean of its divisors is an integer number (59955984).

Almost surely, 2^1026275440 is an apocalyptic number.

1026275440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1026275440 is an abundant number, since it is smaller than the sum of its proper divisors (1371963920).

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

1026275440 is a wasteful number, since it uses less digits than its factorization.

1026275440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65329 (or 65323 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1026275440 is about 32035.5340208338. The cubic root of 1026275440 is about 1008.6828695691.

The spelling of 1026275440 in words is "one billion, twenty-six million, two hundred seventy-five thousand, four hundred forty".