1391572 has 24 divisors (see below), whose sum is σ = 2998016. Its totient is φ = 550368.

The previous prime is 1391567. The next prime is 1391573. The reversal of 1391572 is 2751931.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1391572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391573) 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, 1548 + ... + 2275.

2^1391572 is an apocalyptic number.

It is an amenable number.

1391572 is an abundant number, since it is smaller than the sum of its proper divisors (1606444).

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

1391572 is a wasteful number, since it uses less digits than its factorization.

1391572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847 (or 3845 counting only the distinct ones).

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

The square root of 1391572 is about 1179.6491003684. The cubic root of 1391572 is about 111.6439586508.

It can be divided in two parts, 139 and 1572, that added together give a triangular number (1711 = T₅₈).

The spelling of 1391572 in words is "one million, three hundred ninety-one thousand, five hundred seventy-two".