1315278 has 40 divisors (see below), whose sum is σ = 3084048. Its totient is φ = 418176.

The previous prime is 1315253. The next prime is 1315283. The reversal of 1315278 is 8725131.

1315278 is a `hidden beast` number, since 131 + 527 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3550 + ... + 3902.

2^1315278 is an apocalyptic number.

1315278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1542024).

1315278 is an abundant number, since it is smaller than the sum of its proper divisors (1768770).

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

1315278 is a wasteful number, since it uses less digits than its factorization.

1315278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 381 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1315278 is about 1146.8557014725. The cubic root of 1315278 is about 109.5651704377.

The spelling of 1315278 in words is "one million, three hundred fifteen thousand, two hundred seventy-eight".