40306456 has 32 divisors (see below), whose sum is σ = 80784000. Its totient is φ = 18786816.

The previous prime is 40306423. The next prime is 40306459. The reversal of 40306456 is 65460304.

It is a super-2 number, since 2×40306456² = 3249220790559872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40306459) by changing a digit.

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, 13465 + ... + 16183.

It is an arithmetic number, because the mean of its divisors is an integer number (2524500).

Almost surely, 2^40306456 is an apocalyptic number.

It is an amenable number.

40306456 is an abundant number, since it is smaller than the sum of its proper divisors (40477544).

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

40306456 is a wasteful number, since it uses less digits than its factorization.

40306456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851 (or 2847 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 40306456 is about 6348.7365672234. The cubic root of 40306456 is about 342.8663556387.

The spelling of 40306456 in words is "forty million, three hundred six thousand, four hundred fifty-six".