4921428 has 12 divisors (see below), whose sum is σ = 11483360. Its totient is φ = 1640472.

The previous prime is 4921409. The next prime is 4921429. The reversal of 4921428 is 8241294.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 4921395 and 4921404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921429) 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, 205048 + ... + 205071.

Almost surely, 2^4921428 is an apocalyptic number.

It is an amenable number.

4921428 is an abundant number, since it is smaller than the sum of its proper divisors (6561932).

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

4921428 is a wasteful number, since it uses less digits than its factorization.

4921428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410126 (or 410124 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 4921428 is about 2218.4291739878. The cubic root of 4921428 is about 170.0971532332.

The spelling of 4921428 in words is "four million, nine hundred twenty-one thousand, four hundred twenty-eight".