1378680 has 32 divisors (see below), whose sum is σ = 4136400. Its totient is φ = 367616.

The previous prime is 1378679. The next prime is 1378681. The reversal of 1378680 is 868731.

It is an interprime number because it is at equal distance from previous prime (1378679) and next prime (1378681).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5625 + ... + 5864.

2^1378680 is an apocalyptic number.

1378680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378680 is an abundant number, since it is smaller than the sum of its proper divisors (2757720).

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

1378680 is a wasteful number, since it uses less digits than its factorization.

1378680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11503 (or 11499 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1378680 is about 1174.1720487220. The cubic root of 1378680 is about 111.2981191494.

The spelling of 1378680 in words is "one million, three hundred seventy-eight thousand, six hundred eighty".