4220378 has 4 divisors (see below), whose sum is σ = 6330570. Its totient is φ = 2110188.

The previous prime is 4220357. The next prime is 4220387. The reversal of 4220378 is 8730224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3433609 + 786769 = 1853^2 + 887^2 .

It is a d-powerful number, because it can be written as 4⁶ + 2¹⁹ + 2²¹ + 0 + 3¹³ + 7 + 8³ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055093 + ... + 1055096.

Almost surely, 2^4220378 is an apocalyptic number.

4220378 is a deficient number, since it is larger than the sum of its proper divisors (2110192).

4220378 is a wasteful number, since it uses less digits than its factorization.

4220378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110191.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 4220378 is about 2054.3558601177. The cubic root of 4220378 is about 161.6033837886.

The spelling of 4220378 in words is "four million, two hundred twenty thousand, three hundred seventy-eight".