826996720 has 40 divisors (see below), whose sum is σ = 2097566640. Its totient is φ = 300725760.

The previous prime is 826996697. The next prime is 826996721. The reversal of 826996720 is 27699628.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826996721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469005 + ... + 470764.

It is an arithmetic number, because the mean of its divisors is an integer number (52439166).

Almost surely, 2^826996720 is an apocalyptic number.

826996720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

826996720 is an abundant number, since it is smaller than the sum of its proper divisors (1270569920).

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

826996720 is a wasteful number, since it uses less digits than its factorization.

826996720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939793 (or 939787 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 826996720 is about 28757.5506606526. The cubic root of 826996720 is about 938.6447650153.

The spelling of 826996720 in words is "eight hundred twenty-six million, nine hundred ninety-six thousand, seven hundred twenty".