8420980 has 12 divisors (see below), whose sum is σ = 17684100. Its totient is φ = 3368384.

The previous prime is 8420977. The next prime is 8420983. The reversal of 8420980 is 890248.

It is an interprime number because it is at equal distance from previous prime (8420977) and next prime (8420983).

It can be written as a sum of positive squares in 2 ways, for example, as 5503716 + 2917264 = 2346^2 + 1708^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210505 + ... + 210544.

It is an arithmetic number, because the mean of its divisors is an integer number (1473675).

Almost surely, 2^8420980 is an apocalyptic number.

It is an amenable number.

8420980 is an abundant number, since it is smaller than the sum of its proper divisors (9263120).

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

8420980 is a wasteful number, since it uses less digits than its factorization.

8420980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421058 (or 421056 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 8420980 is about 2901.8924859477. The cubic root of 8420980 is about 203.4483687208.

The spelling of 8420980 in words is "eight million, four hundred twenty thousand, nine hundred eighty".