19676980 has 12 divisors (see below), whose sum is σ = 41321700. Its totient is φ = 7870784.

The previous prime is 19676977. The next prime is 19677019. The reversal of 19676980 is 8967691.

It can be written as a sum of positive squares in 2 ways, for example, as 10784656 + 8892324 = 3284^2 + 2982^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19676980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491905 + ... + 491944.

It is an arithmetic number, because the mean of its divisors is an integer number (3443475).

Almost surely, 2^19676980 is an apocalyptic number.

19676980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19676980 is an abundant number, since it is smaller than the sum of its proper divisors (21644720).

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

19676980 is a wasteful number, since it uses less digits than its factorization.

19676980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983858 (or 983856 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 19676980 is about 4435.8742092174. The cubic root of 19676980 is about 269.9724709015.

The spelling of 19676980 in words is "nineteen million, six hundred seventy-six thousand, nine hundred eighty".