4220900 has 18 divisors (see below), whose sum is σ = 9159570. Its totient is φ = 1688320.

The previous prime is 4220893. The next prime is 4220911. The reversal of 4220900 is 90224.

It can be written as a sum of positive squares in 3 ways, for example, as 678976 + 3541924 = 824^2 + 1882^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21005 + ... + 21204.

It is an arithmetic number, because the mean of its divisors is an integer number (508865).

Almost surely, 2^4220900 is an apocalyptic number.

It is an amenable number.

4220900 is an abundant number, since it is smaller than the sum of its proper divisors (4938670).

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

4220900 is a wasteful number, since it uses less digits than its factorization.

4220900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42223 (or 42216 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 4220900 is about 2054.4829033117. The cubic root of 4220900 is about 161.6100461846.

It can be divided in two parts, 4 and 220900, that multiplied together give a square (883600 = 940²).

The spelling of 4220900 in words is "four million, two hundred twenty thousand, nine hundred".