421049628 has 18 divisors (see below), whose sum is σ = 1064319984. Its totient is φ = 140349864.

The previous prime is 421049627. The next prime is 421049647. The reversal of 421049628 is 826940124.

421049628 is a `hidden beast` number, since 4 + 21 + 0 + 4 + 9 + 628 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11695823 = 421049628 / (4 + 2 + 1 + 0 + 4 + 9 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 421049592 and 421049601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421049627) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 5847876 + ... + 5847947.

It is an arithmetic number, because the mean of its divisors is an integer number (59128888).

Almost surely, 2^421049628 is an apocalyptic number.

It is an amenable number.

421049628 is an abundant number, since it is smaller than the sum of its proper divisors (643270356).

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

421049628 is a wasteful number, since it uses less digits than its factorization.

421049628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11695833 (or 11695828 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 421049628 is about 20519.4938534068. The cubic root of 421049628 is about 749.5105713489.

The spelling of 421049628 in words is "four hundred twenty-one million, forty-nine thousand, six hundred twenty-eight".