40306740 has 24 divisors (see below), whose sum is σ = 112859040. Its totient is φ = 10748448.

The previous prime is 40306687. The next prime is 40306757. The reversal of 40306740 is 4760304.

It is a self number, because there is not a number n which added to its sum of digits gives 40306740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335830 + ... + 335949.

It is an arithmetic number, because the mean of its divisors is an integer number (4702460).

Almost surely, 2^40306740 is an apocalyptic number.

It is an amenable number.

40306740 is an abundant number, since it is smaller than the sum of its proper divisors (72552300).

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

40306740 is a wasteful number, since it uses less digits than its factorization.

40306740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671791 (or 671789 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 40306740 is about 6348.7589338390. The cubic root of 40306740 is about 342.8671609176.

The spelling of 40306740 in words is "forty million, three hundred six thousand, seven hundred forty".