40223646 has 48 divisors (see below), whose sum is σ = 92274000. Its totient is φ = 12628224.

The previous prime is 40223641. The next prime is 40223693. The reversal of 40223646 is 64632204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40223641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115080 + ... + 115428.

It is an arithmetic number, because the mean of its divisors is an integer number (1922375).

Almost surely, 2^40223646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40223646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46137000).

40223646 is an abundant number, since it is smaller than the sum of its proper divisors (52050354).

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

40223646 is a wasteful number, since it uses less digits than its factorization.

40223646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 40223646 is about 6342.2114439681. The cubic root of 40223646 is about 342.6313872461.

The spelling of 40223646 in words is "forty million, two hundred twenty-three thousand, six hundred forty-six".