40146656 has 48 divisors (see below), whose sum is σ = 91309680. Its totient is φ = 17172480.

The previous prime is 40146647. The next prime is 40146683. The reversal of 40146656 is 65664104.

It is a super-2 number, since 2×40146656² = 3223507975964672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2630 + ... + 9338.

It is an arithmetic number, because the mean of its divisors is an integer number (1902285).

Almost surely, 2^40146656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40146656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45654840).

40146656 is an abundant number, since it is smaller than the sum of its proper divisors (51163024).

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

40146656 is a wasteful number, since it uses less digits than its factorization.

40146656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6747 (or 6739 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 40146656 is about 6336.1388873667. The cubic root of 40146656 is about 342.4126432866.

The spelling of 40146656 in words is "forty million, one hundred forty-six thousand, six hundred fifty-six".