1211456 has 28 divisors (see below), whose sum is σ = 2511552. Its totient is φ = 578688.

The previous prime is 1211443. The next prime is 1211477. The reversal of 1211456 is 6541121.

1211456 = T₃₁₃ + T₃₁₄ + ... + T₃₃₅.

It is a super-3 number, since 3×1211456³ = 5333891661762920448, which contains 333 as substring.

It is a hoax number, since the sum of its digits (20) 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, 1061 + ... + 1883.

2^1211456 is an apocalyptic number.

1211456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255776).

1211456 is an abundant number, since it is smaller than the sum of its proper divisors (1300096).

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

1211456 is an equidigital number, since it uses as much as digits as its factorization.

1211456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 848 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 1211456 is about 1100.6616192091. The cubic root of 1211456 is about 106.6029480556.

Adding to 1211456 its reverse (6541121), we get a palindrome (7752577).

The spelling of 1211456 in words is "one million, two hundred eleven thousand, four hundred fifty-six".