1396520 has 16 divisors (see below), whose sum is σ = 3142260. Its totient is φ = 558592.

The previous prime is 1396517. The next prime is 1396523. The reversal of 1396520 is 256931.

It is an interprime number because it is at equal distance from previous prime (1396517) and next prime (1396523).

It can be written as a sum of positive squares in 2 ways, for example, as 1387684 + 8836 = 1178^2 + 94^2 .

It is a super-2 number, since 2×1396520² = 3900536220800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1396520.

It is not an unprimeable number, because it can be changed into a prime (1396523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17417 + ... + 17496.

2^1396520 is an apocalyptic number.

1396520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1396520 is an abundant number, since it is smaller than the sum of its proper divisors (1745740).

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

1396520 is a wasteful number, since it uses less digits than its factorization.

1396520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34924 (or 34920 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1396520 is about 1181.7444732259. The cubic root of 1396520 is about 111.7761259310.

The spelling of 1396520 in words is "one million, three hundred ninety-six thousand, five hundred twenty".