1270878840 has 576 divisors, whose sum is σ = 5477621760. Its totient is φ = 248209920.

The previous prime is 1270878839. The next prime is 1270878841. The reversal of 1270878840 is 488780721.

It is an interprime number because it is at equal distance from previous prime (1270878839) and next prime (1270878841).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270878841) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10006857 + ... + 10006983.

It is an arithmetic number, because the mean of its divisors is an integer number (9509760).

Almost surely, 2^1270878840 is an apocalyptic number.

1270878840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1270878840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2738810880).

1270878840 is an abundant number, since it is smaller than the sum of its proper divisors (4206742920).

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

1270878840 is a wasteful number, since it uses less digits than its factorization.

1270878840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The square root of 1270878840 is about 35649.3876525250. The cubic root of 1270878840 is about 1083.1818715798.

The spelling of 1270878840 in words is "one billion, two hundred seventy million, eight hundred seventy-eight thousand, eight hundred forty".