1270378840 has 16 divisors (see below), whose sum is σ = 2858352480. Its totient is φ = 508151520.

The previous prime is 1270378819. The next prime is 1270378877. The reversal of 1270378840 is 488730721.

It is a super-2 number, since 2×1270378840² = 3227724794239491200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 31759471 = 1270378840 / (1 + 2 + 7 + 0 + 3 + 7 + 8 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1270378793 and 1270378802.

It is a congruent number.

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, 15879696 + ... + 15879775.

It is an arithmetic number, because the mean of its divisors is an integer number (178647030).

Almost surely, 2^1270378840 is an apocalyptic number.

1270378840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1270378840 is an abundant number, since it is smaller than the sum of its proper divisors (1587973640).

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

1270378840 is a wasteful number, since it uses less digits than its factorization.

1270378840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31759482 (or 31759478 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 1270378840 is about 35642.3742194596. The cubic root of 1270378840 is about 1083.0398013944.

The spelling of 1270378840 in words is "one billion, two hundred seventy million, three hundred seventy-eight thousand, eight hundred forty".