826042686 has 48 divisors (see below), whose sum is σ = 1973780496. Its totient is φ = 229630464.

The previous prime is 826042681. The next prime is 826042687. The reversal of 826042686 is 686240628.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826042681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27091 + ... + 48846.

It is an arithmetic number, because the mean of its divisors is an integer number (41120427).

Almost surely, 2^826042686 is an apocalyptic number.

826042686 is an abundant number, since it is smaller than the sum of its proper divisors (1147737810).

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

826042686 is a wasteful number, since it uses less digits than its factorization.

826042686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75993 (or 75986 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 826042686 is about 28740.9583347529. The cubic root of 826042686 is about 938.2836819252.

The spelling of 826042686 in words is "eight hundred twenty-six million, forty-two thousand, six hundred eighty-six".