1211490 has 64 divisors (see below), whose sum is σ = 3697920. Its totient is φ = 276480.

The previous prime is 1211489. The next prime is 1211501. The reversal of 1211490 is 941121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1570 + ... + 2210.

It is an arithmetic number, because the mean of its divisors is an integer number (57780).

2^1211490 is an apocalyptic number.

1211490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1848960).

1211490 is an abundant number, since it is smaller than the sum of its proper divisors (2486430).

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

1211490 is a wasteful number, since it uses less digits than its factorization.

1211490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1211490 is about 1100.6770643563. The cubic root of 1211490 is about 106.6039453312.

The spelling of 1211490 in words is "one million, two hundred eleven thousand, four hundred ninety".