7900816 has 80 divisors (see below), whose sum is σ = 19605888. Its totient is φ = 3020160.

The previous prime is 7900813. The next prime is 7900817. The reversal of 7900816 is 6180097.

7900816 is nontrivially palindromic in base 3.

It is not an unprimeable number, because it can be changed into a prime (7900811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149046 + ... + 149098.

Almost surely, 2^7900816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7900816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9802944).

7900816 is an abundant number, since it is smaller than the sum of its proper divisors (11705072).

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

7900816 is a wasteful number, since it uses less digits than its factorization.

7900816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 7900816 is about 2810.8390206485. The cubic root of 7900816 is about 199.1700271565.

The spelling of 7900816 in words is "seven million, nine hundred thousand, eight hundred sixteen".