420677830 has 32 divisors (see below), whose sum is σ = 770354208. Its totient is φ = 165369600.

The previous prime is 420677821. The next prime is 420677833. The reversal of 420677830 is 38776024.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 420677830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420677833) 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 15 ways as a sum of consecutive naturals, for example, 240760 + ... + 242500.

It is an arithmetic number, because the mean of its divisors is an integer number (24073569).

Almost surely, 2^420677830 is an apocalyptic number.

420677830 is a deficient number, since it is larger than the sum of its proper divisors (349676378).

420677830 is a wasteful number, since it uses less digits than its factorization.

420677830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 420677830 is about 20510.4322236271. The cubic root of 420677830 is about 749.2898938037.

The spelling of 420677830 in words is "four hundred twenty million, six hundred seventy-seven thousand, eight hundred thirty".