787426 has 4 divisors (see below), whose sum is σ = 1181142. Its totient is φ = 393712.

The previous prime is 787361. The next prime is 787427. The reversal of 787426 is 624787.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 123201 = 815^2 + 351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 787391 and 787400.

It is not an unprimeable number, because it can be changed into a prime (787427) by changing a digit.

787426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196855 + ... + 196858.

2⁷⁸⁷⁴²⁶ is an apocalyptic number.

787426 is a deficient number, since it is larger than the sum of its proper divisors (393716).

787426 is a wasteful number, since it uses less digits than its factorization.

787426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393715.

The product of its digits is 18816, while the sum is 34.

The square root of 787426 is about 887.3702722088. The cubic root of 787426 is about 92.3428449092.

The spelling of 787426 in words is "seven hundred eighty-seven thousand, four hundred twenty-six".