7800726 has 16 divisors (see below), whose sum is σ = 16280064. Its totient is φ = 2487144.

The previous prime is 7800649. The next prime is 7800733. The reversal of 7800726 is 6270087.

It is a super-2 number, since 2×7800726² = 121702652254152, which contains 22 as substring.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 7800693 and 7800702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28126 + ... + 28401.

It is an arithmetic number, because the mean of its divisors is an integer number (1017504).

Almost surely, 2^7800726 is an apocalyptic number.

7800726 is an abundant number, since it is smaller than the sum of its proper divisors (8479338).

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

7800726 is a wasteful number, since it uses less digits than its factorization.

7800726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56555.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 7800726 is about 2792.9779805792. The cubic root of 7800726 is about 198.3254010590.

The spelling of 7800726 in words is "seven million, eight hundred thousand, seven hundred twenty-six".