40304436 has 12 divisors (see below), whose sum is σ = 94043712. Its totient is φ = 13434808.

The previous prime is 40304423. The next prime is 40304443. The reversal of 40304436 is 63440304.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×40304436² = 3248895122556192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679340 + ... + 1679363.

It is an arithmetic number, because the mean of its divisors is an integer number (7836976).

Almost surely, 2^40304436 is an apocalyptic number.

It is an amenable number.

40304436 is an abundant number, since it is smaller than the sum of its proper divisors (53739276).

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

40304436 is a wasteful number, since it uses less digits than its factorization.

40304436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358710 (or 3358708 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 40304436 is about 6348.5774784592. The cubic root of 40304436 is about 342.8606278416.

The spelling of 40304436 in words is "forty million, three hundred four thousand, four hundred thirty-six".