8420700 has 36 divisors (see below), whose sum is σ = 24364760. Its totient is φ = 2245440.

The previous prime is 8420681. The next prime is 8420749. The reversal of 8420700 is 70248.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 13735 + ... + 14334.

Almost surely, 2^8420700 is an apocalyptic number.

It is an amenable number.

8420700 is an abundant number, since it is smaller than the sum of its proper divisors (15944060).

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

8420700 is a wasteful number, since it uses less digits than its factorization.

8420700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28086 (or 28079 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 8420700 is about 2901.8442411680. The cubic root of 8420700 is about 203.4461137903.

Adding to 8420700 its reverse (70248), we get a palindrome (8490948).

The spelling of 8420700 in words is "eight million, four hundred twenty thousand, seven hundred".