1215487 has 24 divisors (see below), whose sum is σ = 1621536. Its totient is φ = 886464.

The previous prime is 1215463. The next prime is 1215497. The reversal of 1215487 is 7845121.

It is not a de Polignac number, because 1215487 - 2⁷ = 1215359 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32833 + ... + 32869.

It is an arithmetic number, because the mean of its divisors is an integer number (67564).

2^1215487 is an apocalyptic number.

1215487 is a deficient number, since it is larger than the sum of its proper divisors (406049).

1215487 is a wasteful number, since it uses less digits than its factorization.

1215487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 76 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 1215487 is about 1102.4912698067. The cubic root of 1215487 is about 106.7210540784.

The spelling of 1215487 in words is "one million, two hundred fifteen thousand, four hundred eighty-seven".