1215960 has 32 divisors (see below), whose sum is σ = 3648240. Its totient is φ = 324224.

The previous prime is 1215923. The next prime is 1216009. The reversal of 1215960 is 695121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1215960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4947 + ... + 5186.

2^1215960 is an apocalyptic number.

1215960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215960 is an abundant number, since it is smaller than the sum of its proper divisors (2432280).

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

1215960 is a wasteful number, since it uses less digits than its factorization.

1215960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10143 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1215960 is about 1102.7057631118. The cubic root of 1215960 is about 106.7348955844.

It can be divided in two parts, 1215 and 960, that multiplied together give a square (1166400 = 1080²).

The spelling of 1215960 in words is "one million, two hundred fifteen thousand, nine hundred sixty".