1379520 has 84 divisors (see below), whose sum is σ = 4754880. Its totient is φ = 367104.

The previous prime is 1379519. The next prime is 1379549. The reversal of 1379520 is 259731.

1379520 is a `hidden beast` number, since 137 + 9 + 520 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2641 + ... + 3119.

2^1379520 is an apocalyptic number.

1379520 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 1379520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2377440).

1379520 is an abundant number, since it is smaller than the sum of its proper divisors (3375360).

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

1379520 is a wasteful number, since it uses less digits than its factorization.

1379520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 1379520 is about 1174.5296931112. The cubic root of 1379520 is about 111.3207184085.

The spelling of 1379520 in words is "one million, three hundred seventy-nine thousand, five hundred twenty".