7900726 has 4 divisors (see below), whose sum is σ = 11851092. Its totient is φ = 3950362.

The previous prime is 7900709. The next prime is 7900757. The reversal of 7900726 is 6270097.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6270097 = 241 ⋅26017.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975180 + ... + 1975183.

It is an arithmetic number, because the mean of its divisors is an integer number (2962773).

Almost surely, 2^7900726 is an apocalyptic number.

7900726 is a deficient number, since it is larger than the sum of its proper divisors (3950366).

7900726 is a wasteful number, since it uses less digits than its factorization.

7900726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950365.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 7900726 is about 2810.8230111482. The cubic root of 7900726 is about 199.1692708899.

The spelling of 7900726 in words is "seven million, nine hundred thousand, seven hundred twenty-six".