1315722 has 16 divisors (see below), whose sum is σ = 2658240. Its totient is φ = 434112.

The previous prime is 1315711. The next prime is 1315723. The reversal of 1315722 is 2275131.

It is a super-2 number, since 2×1315722² = 3462248762568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1315723) 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, 447 + ... + 1682.

It is an arithmetic number, because the mean of its divisors is an integer number (166140).

2^1315722 is an apocalyptic number.

1315722 is an abundant number, since it is smaller than the sum of its proper divisors (1342518).

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

1315722 is a wasteful number, since it uses less digits than its factorization.

1315722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237.

The product of its digits is 420, while the sum is 21.

The square root of 1315722 is about 1147.0492578787. The cubic root of 1315722 is about 109.5774977335.

The spelling of 1315722 in words is "one million, three hundred fifteen thousand, seven hundred twenty-two".