820087300 has 36 divisors (see below), whose sum is σ = 1781847760. Its totient is φ = 327618720.

The previous prime is 820087283. The next prime is 820087313. The reversal of 820087300 is 3780028.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81127 + ... + 90673.

Almost surely, 2^820087300 is an apocalyptic number.

It is an amenable number.

820087300 is an abundant number, since it is smaller than the sum of its proper divisors (961760460).

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

820087300 is a wasteful number, since it uses less digits than its factorization.

820087300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10420 (or 10413 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 820087300 is about 28637.1664101042. The cubic root of 820087300 is about 936.0233773717.

The spelling of 820087300 in words is "eight hundred twenty million, eighty-seven thousand, three hundred".