40323456 has 192 divisors, whose sum is σ = 128887200. Its totient is φ = 12042240.

The previous prime is 40323431. The next prime is 40323457. The reversal of 40323456 is 65432304.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×40323456² = 3251962207567872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40323457) 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, 567901 + ... + 567971.

Almost surely, 2^40323456 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 40323456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64443600).

40323456 is an abundant number, since it is smaller than the sum of its proper divisors (88563744).

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

40323456 is a wasteful number, since it uses less digits than its factorization.

40323456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 40323456 is about 6350.0752751444. The cubic root of 40323456 is about 342.9145522913.

The spelling of 40323456 in words is "forty million, three hundred twenty-three thousand, four hundred fifty-six".