1521696 has 72 divisors (see below), whose sum is σ = 4424112. Its totient is φ = 457600.

The previous prime is 1521677. The next prime is 1521731. The reversal of 1521696 is 6961251.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11551 + ... + 11681.

It is an arithmetic number, because the mean of its divisors is an integer number (61446).

2^1521696 is an apocalyptic number.

1521696 is a gapful number since it is divisible by the number (16) 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 1521696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2212056).

1521696 is an abundant number, since it is smaller than the sum of its proper divisors (2902416).

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

1521696 is a wasteful number, since it uses less digits than its factorization.

1521696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 147 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 1521696 is about 1233.5704276611. The cubic root of 1521696 is about 115.0206894093.

The spelling of 1521696 in words is "one million, five hundred twenty-one thousand, six hundred ninety-six".