1375280 has 20 divisors (see below), whose sum is σ = 3197712. Its totient is φ = 550080.

The previous prime is 1375261. The next prime is 1375303. The reversal of 1375280 is 825731.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) 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, 8516 + ... + 8675.

2^1375280 is an apocalyptic number.

1375280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375280 is an abundant number, since it is smaller than the sum of its proper divisors (1822432).

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

1375280 is a wasteful number, since it uses less digits than its factorization.

1375280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17204 (or 17198 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1375280 is about 1172.7233262795. The cubic root of 1375280 is about 111.2065520698.

The spelling of 1375280 in words is "one million, three hundred seventy-five thousand, two hundred eighty".