1210880 has 80 divisors (see below), whose sum is σ = 3240864. Its totient is φ = 430080.

The previous prime is 1210879. The next prime is 1210883. The reversal of 1210880 is 880121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1210883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28139 + ... + 28181.

2^1210880 is an apocalyptic number.

1210880 is a gapful number since it is divisible by the number (10) 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 1210880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620432).

1210880 is an abundant number, since it is smaller than the sum of its proper divisors (2029984).

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

1210880 is an equidigital number, since it uses as much as digits as its factorization.

1210880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1210880 is about 1100.3999272992. The cubic root of 1210880 is about 106.5860501982.

The spelling of 1210880 in words is "one million, two hundred ten thousand, eight hundred eighty".