4013526 has 16 divisors (see below), whose sum is σ = 8756928. Its totient is φ = 1216200.

The previous prime is 4013521. The next prime is 4013543. The reversal of 4013526 is 6253104.

It is a happy number.

It is a super-2 number, since 2×4013526² = 32216781905352, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013521) 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, 30340 + ... + 30471.

It is an arithmetic number, because the mean of its divisors is an integer number (547308).

Almost surely, 2^4013526 is an apocalyptic number.

4013526 is an abundant number, since it is smaller than the sum of its proper divisors (4743402).

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

4013526 is a wasteful number, since it uses less digits than its factorization.

4013526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60827.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 4013526 is about 2003.3786461875. The cubic root of 4013526 is about 158.9188304500.

The spelling of 4013526 in words is "four million, thirteen thousand, five hundred twenty-six".