40309750 has 64 divisors (see below), whose sum is σ = 82817280. Its totient is φ = 14601600.

The previous prime is 40309741. The next prime is 40309751. The reversal of 40309750 is 5790304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40309751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256672 + ... + 256828.

It is an arithmetic number, because the mean of its divisors is an integer number (1294020).

Almost surely, 2^40309750 is an apocalyptic number.

40309750 is an abundant number, since it is smaller than the sum of its proper divisors (42507530).

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

40309750 is a wasteful number, since it uses less digits than its factorization.

40309750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 40309750 is about 6348.9959836182. The cubic root of 40309750 is about 342.8756955073.

The spelling of 40309750 in words is "forty million, three hundred nine thousand, seven hundred fifty".