1266090 has 32 divisors (see below), whose sum is σ = 3473280. Its totient is φ = 289344.

The previous prime is 1266079. The next prime is 1266091. The reversal of 1266090 is 906621.

It is a self number, because there is not a number n which added to its sum of digits gives 1266090.

It is not an unprimeable number, because it can be changed into a prime (1266091) 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, 2805 + ... + 3224.

It is an arithmetic number, because the mean of its divisors is an integer number (108540).

2^1266090 is an apocalyptic number.

1266090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266090 is an abundant number, since it is smaller than the sum of its proper divisors (2207190).

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

1266090 is a wasteful number, since it uses less digits than its factorization.

1266090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1266090 is about 1125.2066476874. The cubic root of 1266090 is about 108.1819634804.

It can be divided in two parts, 126 and 6090, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 1266090 in words is "one million, two hundred sixty-six thousand, ninety".