4001826 has 32 divisors (see below), whose sum is σ = 8395200. Its totient is φ = 1270080.

The previous prime is 4001807. The next prime is 4001827. The reversal of 4001826 is 6281004.

It is a super-2 number, since 2×4001826² = 32029222668552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4001827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18861 + ... + 19071.

It is an arithmetic number, because the mean of its divisors is an integer number (262350).

Almost surely, 2^4001826 is an apocalyptic number.

4001826 is an abundant number, since it is smaller than the sum of its proper divisors (4393374).

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

4001826 is a wasteful number, since it uses less digits than its factorization.

4001826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 4001826 is about 2000.4564479138. The cubic root of 4001826 is about 158.7642564748.

The spelling of 4001826 in words is "four million, one thousand, eight hundred twenty-six".