1315888 has 40 divisors (see below), whose sum is σ = 3015680. Its totient is φ = 544320.

The previous prime is 1315871. The next prime is 1315889. The reversal of 1315888 is 8885131.

It is a super-2 number, since 2×1315888² = 3463122457088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1315889) 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, 3283 + ... + 3661.

It is an arithmetic number, because the mean of its divisors is an integer number (75392).

2^1315888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507840).

1315888 is an abundant number, since it is smaller than the sum of its proper divisors (1699792).

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

1315888 is a wasteful number, since it uses less digits than its factorization.

1315888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 419 counting only the distinct ones).

The product of its digits is 7680, while the sum is 34.

The square root of 1315888 is about 1147.1216151743. The cubic root of 1315888 is about 109.5821058750.

The spelling of 1315888 in words is "one million, three hundred fifteen thousand, eight hundred eighty-eight".