7920738 has 48 divisors (see below), whose sum is σ = 20155200. Its totient is φ = 2200608.

The previous prime is 7920727. The next prime is 7920761. The reversal of 7920738 is 8370297.

7920738 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3813 + ... + 5511.

It is an arithmetic number, because the mean of its divisors is an integer number (419900).

Almost surely, 2^7920738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7920738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10077600).

7920738 is an abundant number, since it is smaller than the sum of its proper divisors (12234462).

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

7920738 is a wasteful number, since it uses less digits than its factorization.

7920738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 7920738 is about 2814.3805712803. The cubic root of 7920738 is about 199.3372898350.

The spelling of 7920738 in words is "seven million, nine hundred twenty thousand, seven hundred thirty-eight".