1270990 has 32 divisors (see below), whose sum is σ = 2663424. Its totient is φ = 427680.

The previous prime is 1270981. The next prime is 1271027. The reversal of 1270990 is 990721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4555 + ... + 4825.

It is an arithmetic number, because the mean of its divisors is an integer number (83232).

2^1270990 is an apocalyptic number.

1270990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1270990 is an abundant number, since it is smaller than the sum of its proper divisors (1392434).

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

1270990 is a wasteful number, since it uses less digits than its factorization.

1270990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1270990 is about 1127.3819228638. The cubic root of 1270990 is about 108.3213451560.

The spelling of 1270990 in words is "one million, two hundred seventy thousand, nine hundred ninety".