802287780 has 72 divisors (see below), whose sum is σ = 2613175488. Its totient is φ = 183379392.

The previous prime is 802287767. The next prime is 802287821. The reversal of 802287780 is 87782208.

It is a super-3 number, since 3×802287780³ (a number of 28 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133504 + ... + 139383.

It is an arithmetic number, because the mean of its divisors is an integer number (36294104).

Almost surely, 2^802287780 is an apocalyptic number.

It is an amenable number.

802287780 is an abundant number, since it is smaller than the sum of its proper divisors (1810887708).

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

802287780 is a wasteful number, since it uses less digits than its factorization.

802287780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272913 (or 272904 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 802287780 is about 28324.6849938353. The cubic root of 802287780 is about 929.2018357011.

The spelling of 802287780 in words is "eight hundred two million, two hundred eighty-seven thousand, seven hundred eighty".