807220 has 12 divisors (see below), whose sum is σ = 1695204. Its totient is φ = 322880.

The previous prime is 807217. The next prime is 807221. The reversal of 807220 is 22708.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 226576 = 762^2 + 476^2 .

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807221) 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, 20161 + ... + 20200.

It is an arithmetic number, because the mean of its divisors is an integer number (141267).

2⁸⁰⁷²²⁰ is an apocalyptic number.

It is an amenable number.

807220 is an abundant number, since it is smaller than the sum of its proper divisors (887984).

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

807220 is a wasteful number, since it uses less digits than its factorization.

807220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40370 (or 40368 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 807220 is about 898.4542281051. The cubic root of 807220 is about 93.1102096535.

Adding to 807220 its reverse (22708), we get a palindrome (829928).

It can be divided in two parts, 80 and 7220, that multiplied together give a square (577600 = 760²).

The spelling of 807220 in words is "eight hundred seven thousand, two hundred twenty".