40485690 has 128 divisors (see below), whose sum is σ = 127549440. Its totient is φ = 8942400.

The previous prime is 40485673. The next prime is 40485701. The reversal of 40485690 is 9658404.

40485690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40485690² = 3278182189552200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58245 + ... + 58935.

It is an arithmetic number, because the mean of its divisors is an integer number (996480).

Almost surely, 2^40485690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40485690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63774720).

40485690 is an abundant number, since it is smaller than the sum of its proper divisors (87063750).

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

40485690 is a wasteful number, since it uses less digits than its factorization.

40485690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 40485690 is about 6362.8366315661. The cubic root of 40485690 is about 343.3738214315.

The spelling of 40485690 in words is "forty million, four hundred eighty-five thousand, six hundred ninety".