1275890 has 32 divisors (see below), whose sum is σ = 2865024. Its totient is φ = 397440.

The previous prime is 1275889. The next prime is 1275893. The reversal of 1275890 is 985721.

It is not an unprimeable number, because it can be changed into a prime (1275893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59 + ... + 1598.

It is an arithmetic number, because the mean of its divisors is an integer number (89532).

2^1275890 is an apocalyptic number.

1275890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275890 is an abundant number, since it is smaller than the sum of its proper divisors (1589134).

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

1275890 is a wasteful number, since it uses less digits than its factorization.

1275890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1275890 is about 1129.5530089376. The cubic root of 1275890 is about 108.4603690551.

The spelling of 1275890 in words is "one million, two hundred seventy-five thousand, eight hundred ninety".