1005724 has 6 divisors (see below), whose sum is σ = 1760024. Its totient is φ = 502860.

The previous prime is 1005709. The next prime is 1005751. The reversal of 1005724 is 4275001.

It is a super-2 number, since 2×1005724² = 2022961528352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125712 + ... + 125719.

2^1005724 is an apocalyptic number.

It is an amenable number.

1005724 is a deficient number, since it is larger than the sum of its proper divisors (754300).

1005724 is a wasteful number, since it uses less digits than its factorization.

1005724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251435 (or 251433 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1005724 is about 1002.8579161576. The cubic root of 1005724 is about 100.1904371069.

It can be divided in two parts, 100572 and 4, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 1005724 in words is "one million, five thousand, seven hundred twenty-four".