4921680 has 40 divisors (see below), whose sum is σ = 15257952. Its totient is φ = 1312384.

The previous prime is 4921673. The next prime is 4921711. The reversal of 4921680 is 861294.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10014 + ... + 10493.

Almost surely, 2^4921680 is an apocalyptic number.

4921680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4921680 is an abundant number, since it is smaller than the sum of its proper divisors (10336272).

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

4921680 is a wasteful number, since it uses less digits than its factorization.

4921680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20523 (or 20517 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 4921680 is about 2218.4859702058. The cubic root of 4921680 is about 170.1000564388.

The spelling of 4921680 in words is "four million, nine hundred twenty-one thousand, six hundred eighty".