1213960 has 64 divisors (see below), whose sum is σ = 3110400. Its totient is φ = 422400.

The previous prime is 1213951. The next prime is 1213981. The reversal of 1213960 is 693121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13596 + ... + 13684.

It is an arithmetic number, because the mean of its divisors is an integer number (48600).

2^1213960 is an apocalyptic number.

1213960 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 1213960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555200).

1213960 is an abundant number, since it is smaller than the sum of its proper divisors (1896440).

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

1213960 is a wasteful number, since it uses less digits than its factorization.

1213960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1213960 is about 1101.7985296777. The cubic root of 1213960 is about 106.6763446080.

The spelling of 1213960 in words is "one million, two hundred thirteen thousand, nine hundred sixty".