40680881 has 32 divisors (see below), whose sum is σ = 48470400. Its totient is φ = 33868800.

The previous prime is 40680863. The next prime is 40680889. The reversal of 40680881 is 18808604.

40680881 = T₁₃₄ + T₁₃₅ + ... + T₆₂₆.

It is a cyclic number.

It is not a de Polignac number, because 40680881 - 2²² = 36486577 is a prime.

It is a super-2 number, since 2×40680881² = 3309868157872322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40680889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402731 + ... + 402831.

It is an arithmetic number, because the mean of its divisors is an integer number (1514700).

Almost surely, 2^40680881 is an apocalyptic number.

It is an amenable number.

40680881 is a deficient number, since it is larger than the sum of its proper divisors (7789519).

40680881 is a wasteful number, since it uses less digits than its factorization.

40680881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 40680881 is about 6378.1565518573. The cubic root of 40680881 is about 343.9247655238.

The spelling of 40680881 in words is "forty million, six hundred eighty thousand, eight hundred eighty-one".