1520816 has 20 divisors (see below), whose sum is σ = 3214824. Its totient is φ = 691200.

The previous prime is 1520801. The next prime is 1520821. The reversal of 1520816 is 6180251.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1520791 and 1520800.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4145 + ... + 4496.

2^1520816 is an apocalyptic number.

1520816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1520816 is an abundant number, since it is smaller than the sum of its proper divisors (1694008).

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

1520816 is a wasteful number, since it uses less digits than its factorization.

1520816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660 (or 8654 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1520816 is about 1233.2136878903. The cubic root of 1520816 is about 114.9985128982.

The spelling of 1520816 in words is "one million, five hundred twenty thousand, eight hundred sixteen".