40045026 has 64 divisors (see below), whose sum is σ = 95563008. Its totient is φ = 10948608.

The previous prime is 40045009. The next prime is 40045037. The reversal of 40045026 is 62054004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40044993 and 40045011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113266 + ... + 113618.

It is an arithmetic number, because the mean of its divisors is an integer number (1493172).

Almost surely, 2^40045026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40045026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47781504).

40045026 is an abundant number, since it is smaller than the sum of its proper divisors (55517982).

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

40045026 is a wasteful number, since it uses less digits than its factorization.

40045026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

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

The square root of 40045026 is about 6328.1139370274. The cubic root of 40045026 is about 342.1234635117.

The spelling of 40045026 in words is "forty million, forty-five thousand, twenty-six".