1306724 has 6 divisors (see below), whose sum is σ = 2286774. Its totient is φ = 653360.

The previous prime is 1306717. The next prime is 1306733. The reversal of 1306724 is 4276031.

It can be written as a sum of positive squares in only one way, i.e., 1036324 + 270400 = 1018^2 + 520^2 .

It is a super-2 number, since 2×1306724² = 3415055224352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1306724.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163337 + ... + 163344.

It is an arithmetic number, because the mean of its divisors is an integer number (381129).

2^1306724 is an apocalyptic number.

It is an amenable number.

1306724 is a deficient number, since it is larger than the sum of its proper divisors (980050).

1306724 is a wasteful number, since it uses less digits than its factorization.

1306724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326685 (or 326683 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1306724 is about 1143.1202911330. The cubic root of 1306724 is about 109.3271321422.

The spelling of 1306724 in words is "one million, three hundred six thousand, seven hundred twenty-four".