820940896 has 12 divisors (see below), whose sum is σ = 1616227452. Its totient is φ = 410470432.

The previous prime is 820940893. The next prime is 820940917. The reversal of 820940896 is 698049028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820940893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12827170 + ... + 12827233.

It is an arithmetic number, because the mean of its divisors is an integer number (134685621).

Almost surely, 2^820940896 is an apocalyptic number.

It is an amenable number.

820940896 is a deficient number, since it is larger than the sum of its proper divisors (795286556).

820940896 is a wasteful number, since it uses less digits than its factorization.

820940896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25654413 (or 25654405 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 820940896 is about 28652.0661733146. The cubic root of 820940896 is about 936.3480211668.

The spelling of 820940896 in words is "eight hundred twenty million, nine hundred forty thousand, eight hundred ninety-six".