1378270420 has 12 divisors (see below), whose sum is σ = 2894367924. Its totient is φ = 551308160.

The previous prime is 1378270409. The next prime is 1378270433. The reversal of 1378270420 is 240728731.

It can be written as a sum of positive squares in 2 ways, for example, as 171819664 + 1206450756 = 13108^2 + 34734^2 .

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, 34456741 + ... + 34456780.

It is an arithmetic number, because the mean of its divisors is an integer number (241197327).

Almost surely, 2^1378270420 is an apocalyptic number.

1378270420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378270420 is an abundant number, since it is smaller than the sum of its proper divisors (1516097504).

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

1378270420 is a wasteful number, since it uses less digits than its factorization.

1378270420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68913530 (or 68913528 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 1378270420 is about 37125.0645790684. The cubic root of 1378270420 is about 1112.8709652911.

The spelling of 1378270420 in words is "one billion, three hundred seventy-eight million, two hundred seventy thousand, four hundred twenty".