820203702 has 8 divisors (see below), whose sum is σ = 1640407416. Its totient is φ = 273401232.

The previous prime is 820203701. The next prime is 820203731. The reversal of 820203702 is 207302028.

It is a sphenic number, since it is the product of 3 distinct primes.

820203702 is an admirable number.

It is a super-2 number, since 2×820203702² = 1345468225549009608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820203701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68350303 + ... + 68350314.

It is an arithmetic number, because the mean of its divisors is an integer number (205050927).

Almost surely, 2^820203702 is an apocalyptic number.

820203702 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

820203702 is a wasteful number, since it uses less digits than its factorization.

820203702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136700622.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 820203702 is about 28639.1986968909. The cubic root of 820203702 is about 936.0676612093.

The spelling of 820203702 in words is "eight hundred twenty million, two hundred three thousand, seven hundred two".