1391752 has 8 divisors (see below), whose sum is σ = 2609550. Its totient is φ = 695872.

The previous prime is 1391729. The next prime is 1391779. The reversal of 1391752 is 2571931.

It can be written as a sum of positive squares in only one way, i.e., 910116 + 481636 = 954^2 + 694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1391752.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86977 + ... + 86992.

2^1391752 is an apocalyptic number.

It is an amenable number.

1391752 is a deficient number, since it is larger than the sum of its proper divisors (1217798).

1391752 is a wasteful number, since it uses less digits than its factorization.

1391752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173975 (or 173971 counting only the distinct ones).

The product of its digits is 1890, while the sum is 28.

The square root of 1391752 is about 1179.7253917756. The cubic root of 1391752 is about 111.6487721629.

It can be divided in two parts, 139 and 1752, that added together give a triangular number (1891 = T₆₁).

The spelling of 1391752 in words is "one million, three hundred ninety-one thousand, seven hundred fifty-two".