321486020 has 12 divisors (see below), whose sum is σ = 675120684. Its totient is φ = 128594400.

The previous prime is 321486013. The next prime is 321486029. The reversal of 321486020 is 20684123.

It can be written as a sum of positive squares in 2 ways, for example, as 131928196 + 189557824 = 11486^2 + 13768^2 .

It is a super-2 number, since 2×321486020² = 206706522110880800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321486029) 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, 8037131 + ... + 8037170.

It is an arithmetic number, because the mean of its divisors is an integer number (56260057).

Almost surely, 2^321486020 is an apocalyptic number.

It is an amenable number.

321486020 is an abundant number, since it is smaller than the sum of its proper divisors (353634664).

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

321486020 is a wasteful number, since it uses less digits than its factorization.

321486020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16074310 (or 16074308 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 321486020 is about 17930.0312325439. The cubic root of 321486020 is about 685.0475183261.

The spelling of 321486020 in words is "three hundred twenty-one million, four hundred eighty-six thousand, twenty".