40781026 has 16 divisors (see below), whose sum is σ = 71866368. Its totient is φ = 17110800.

The previous prime is 40781021. The next prime is 40781053. The reversal of 40781026 is 62018704.

It is a super-2 number, since 2×40781026² = 3326184163225352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40780985 and 40781003.

It is not an unprimeable number, because it can be changed into a prime (40781021) 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, 71010 + ... + 71581.

It is an arithmetic number, because the mean of its divisors is an integer number (4491648).

Almost surely, 2^40781026 is an apocalyptic number.

40781026 is a deficient number, since it is larger than the sum of its proper divisors (31085342).

40781026 is a wasteful number, since it uses less digits than its factorization.

40781026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142617.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 40781026 is about 6386.0023488878. The cubic root of 40781026 is about 344.2067499261.

The spelling of 40781026 in words is "forty million, seven hundred eighty-one thousand, twenty-six".