1275013888 has 36 divisors (see below), whose sum is σ = 2552772040. Its totient is φ = 635572224.

The previous prime is 1275013877. The next prime is 1275013891. The reversal of 1275013888 is 8883105721.

It is a super-3 number, since 3×1275013888³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78883 + ... + 93661.

Almost surely, 2^1275013888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275013888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276386020).

1275013888 is an abundant number, since it is smaller than the sum of its proper divisors (1277758152).

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

1275013888 is an equidigital number, since it uses as much as digits as its factorization.

1275013888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15132 (or 15118 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 1275013888 is about 35707.3366130828. The cubic root of 1275013888 is about 1084.3553797279.

The spelling of 1275013888 in words is "one billion, two hundred seventy-five million, thirteen thousand, eight hundred eighty-eight".