40828731 has 8 divisors (see below), whose sum is σ = 54480384. Its totient is φ = 27198120.

The previous prime is 40828721. The next prime is 40828751. The reversal of 40828731 is 13782804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40828731 - 2⁵ = 40828699 is a prime.

It is a super-2 number, since 2×40828731² = 3333970550140722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40828692 and 40828701.

It is not an unprimeable number, because it can be changed into a prime (40828721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30 + ... + 9036.

It is an arithmetic number, because the mean of its divisors is an integer number (6810048).

Almost surely, 2^40828731 is an apocalyptic number.

40828731 is a deficient number, since it is larger than the sum of its proper divisors (13651653).

40828731 is a wasteful number, since it uses less digits than its factorization.

40828731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 40828731 is about 6389.7363795387. The cubic root of 40828731 is about 344.3409134985.

The spelling of 40828731 in words is "forty million, eight hundred twenty-eight thousand, seven hundred thirty-one".