4001236 has 18 divisors (see below), whose sum is σ = 7182042. Its totient is φ = 1950480.

The previous prime is 4001227. The next prime is 4001237. The reversal of 4001236 is 6321004.

It can be written as a sum of positive squares in only one way, i.e., 3261636 + 739600 = 1806^2 + 860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7126 + ... + 7666.

Almost surely, 2^4001236 is an apocalyptic number.

It is an amenable number.

4001236 is a deficient number, since it is larger than the sum of its proper divisors (3180806).

4001236 is a wasteful number, since it uses less digits than its factorization.

4001236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 4001236 is about 2000.3089761334. The cubic root of 4001236 is about 158.7564537439.

The spelling of 4001236 in words is "four million, one thousand, two hundred thirty-six".