1213560 has 48 divisors (see below), whose sum is σ = 3945240. Its totient is φ = 323520.

The previous prime is 1213547. The next prime is 1213561. The reversal of 1213560 is 653121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1326 + ... + 2045.

2^1213560 is an apocalyptic number.

1213560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213560 is an abundant number, since it is smaller than the sum of its proper divisors (2731680).

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

1213560 is a wasteful number, since it uses less digits than its factorization.

1213560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388 (or 3381 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1213560 is about 1101.6169933330. The cubic root of 1213560 is about 106.6646266971.

Adding to 1213560 its reverse (653121), we get a palindrome (1866681).

The spelling of 1213560 in words is "one million, two hundred thirteen thousand, five hundred sixty".