4220526 has 16 divisors (see below), whose sum is σ = 8713728. Its totient is φ = 1361400.

The previous prime is 4220521. The next prime is 4220533. The reversal of 4220526 is 6250224.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11160 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (544608).

Almost surely, 2^4220526 is an apocalyptic number.

4220526 is an abundant number, since it is smaller than the sum of its proper divisors (4493202).

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

4220526 is a wasteful number, since it uses less digits than its factorization.

4220526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22727.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4220526 is about 2054.3918808251. The cubic root of 4220526 is about 161.6052727996.

The spelling of 4220526 in words is "four million, two hundred twenty thousand, five hundred twenty-six".