1396920 has 64 divisors (see below), whose sum is σ = 4792320. Its totient is φ = 319104.

The previous prime is 1396909. The next prime is 1396939. The reversal of 1396920 is 296931.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (74880).

2^1396920 is an apocalyptic number.

1396920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2396160).

1396920 is an abundant number, since it is smaller than the sum of its proper divisors (3395400).

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

1396920 is a wasteful number, since it uses less digits than its factorization.

1396920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1396920 is about 1181.9137024335. The cubic root of 1396920 is about 111.7867967848.

1396920 divided by its sum of digits (30) gives a palindrome (46564).

The spelling of 1396920 in words is "one million, three hundred ninety-six thousand, nine hundred twenty".