40427646 has 48 divisors (see below), whose sum is σ = 94665600. Its totient is φ = 11476080.

The previous prime is 40427641. The next prime is 40427659. The reversal of 40427646 is 64672404.

40427646 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 2×40427646² = 3268789122202632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40427641) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 58161 + ... + 58851.

It is an arithmetic number, because the mean of its divisors is an integer number (1972200).

Almost surely, 2^40427646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40427646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47332800).

40427646 is an abundant number, since it is smaller than the sum of its proper divisors (54237954).

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

40427646 is a wasteful number, since it uses less digits than its factorization.

40427646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 40427646 is about 6358.2738223515. The cubic root of 40427646 is about 343.2096455415.

The spelling of 40427646 in words is "forty million, four hundred twenty-seven thousand, six hundred forty-six".