1215460 has 12 divisors (see below), whose sum is σ = 2552508. Its totient is φ = 486176.

The previous prime is 1215457. The next prime is 1215463. The reversal of 1215460 is 645121.

It is an interprime number because it is at equal distance from previous prime (1215457) and next prime (1215463).

It can be written as a sum of positive squares in 2 ways, for example, as 763876 + 451584 = 874^2 + 672^2 .

It is not an unprimeable number, because it can be changed into a prime (1215463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30367 + ... + 30406.

It is an arithmetic number, because the mean of its divisors is an integer number (212709).

2^1215460 is an apocalyptic number.

1215460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215460 is an abundant number, since it is smaller than the sum of its proper divisors (1337048).

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

1215460 is a wasteful number, since it uses less digits than its factorization.

1215460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60782 (or 60780 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1215460 is about 1102.4790247438. The cubic root of 1215460 is about 106.7202638629.

The spelling of 1215460 in words is "one million, two hundred fifteen thousand, four hundred sixty".