1215632 has 20 divisors (see below), whose sum is σ = 2569776. Its totient is φ = 552480.

The previous prime is 1215631. The next prime is 1215637. The reversal of 1215632 is 2365121.

It is a super-2 number, since 2×1215632² = 2955522318848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1215631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3278 + ... + 3629.

2^1215632 is an apocalyptic number.

It is an amenable number.

1215632 is an abundant number, since it is smaller than the sum of its proper divisors (1354144).

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

1215632 is a wasteful number, since it uses less digits than its factorization.

1215632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6926 (or 6920 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 1215632 is about 1102.5570280035. The cubic root of 1215632 is about 106.7252976278.

It can be divided in two parts, 121 and 5632, that multiplied together give a cube (681472 = 88³).

The spelling of 1215632 in words is "one million, two hundred fifteen thousand, six hundred thirty-two".