7820736 has 168 divisors, whose sum is σ = 26968704. Its totient is φ = 1943040.

The previous prime is 7820719. The next prime is 7820783. The reversal of 7820736 is 6370287.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×7820736² = 122327823163392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 7820697 and 7820706.

It is a congruent 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, 340021 + ... + 340043.

It is an arithmetic number, because the mean of its divisors is an integer number (160528).

Almost surely, 2^7820736 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 7820736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13484352).

7820736 is an abundant number, since it is smaller than the sum of its proper divisors (19147968).

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

7820736 is a wasteful number, since it uses less digits than its factorization.

7820736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 7820736 is about 2796.5578842570. The cubic root of 7820736 is about 198.4948341284.

The spelling of 7820736 in words is "seven million, eight hundred twenty thousand, seven hundred thirty-six".