1391208 has 96 divisors (see below), whose sum is σ = 4392000. Its totient is φ = 366912.

The previous prime is 1391207. The next prime is 1391233. The reversal of 1391208 is 8021931.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1391207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107010 + ... + 107022.

It is an arithmetic number, because the mean of its divisors is an integer number (45750).

2^1391208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196000).

1391208 is an abundant number, since it is smaller than the sum of its proper divisors (3000792).

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

1391208 is a wasteful number, since it uses less digits than its factorization.

1391208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1391208 is about 1179.4948071102. The cubic root of 1391208 is about 111.6342233910.

It can be divided in two parts, 139120 and 8, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 1391208 in words is "one million, three hundred ninety-one thousand, two hundred eight".