1215364 has 24 divisors (see below), whose sum is σ = 2296728. Its totient is φ = 560640.

The previous prime is 1215359. The next prime is 1215367. The reversal of 1215364 is 4635121.

It can be written as a sum of positive squares in 4 ways, for example, as 293764 + 921600 = 542^2 + 960^2 .

It is not an unprimeable number, because it can be changed into a prime (1215367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4002 + ... + 4294.

It is an arithmetic number, because the mean of its divisors is an integer number (95697).

2^1215364 is an apocalyptic number.

It is an amenable number.

1215364 is a deficient number, since it is larger than the sum of its proper divisors (1081364).

1215364 is a wasteful number, since it uses less digits than its factorization.

1215364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 1215364 is about 1102.4354856408. The cubic root of 1215364 is about 106.7174541132.

It can be divided in two parts, 12 and 15364, that added together give a square (15376 = 124²).

The spelling of 1215364 in words is "one million, two hundred fifteen thousand, three hundred sixty-four".