40026 has 16 divisors (see below), whose sum is σ = 91584. Its totient is φ = 11424.

The previous prime is 40013. The next prime is 40031. The reversal of 40026 is 62004.

40026 = T₂₈ + T₂₉ + ... + T₆₃.

40026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 39993 and 40020.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40026.

It is an unprimeable number.

40026 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435 + ... + 518.

It is an arithmetic number, because the mean of its divisors is an integer number (5724).

2⁴⁰⁰²⁶ is an apocalyptic number.

40026 is an abundant number, since it is smaller than the sum of its proper divisors (51558).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45792).

40026 is a wasteful number, since it uses less digits than its factorization.

40026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 40026 is about 200.0649894409. The cubic root of 40026 is about 34.2069272244.

The spelling of 40026 in words is "forty thousand, twenty-six".