40308590 has 16 divisors (see below), whose sum is σ = 82920672. Its totient is φ = 13820064.

The previous prime is 40308589. The next prime is 40308599. The reversal of 40308590 is 9580304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40308599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287849 + ... + 287988.

It is an arithmetic number, because the mean of its divisors is an integer number (5182542).

Almost surely, 2^40308590 is an apocalyptic number.

40308590 is an abundant number, since it is smaller than the sum of its proper divisors (42612082).

40308590 is a wasteful number, since it uses less digits than its factorization.

40308590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575851.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40308590 is about 6348.9046299342. The cubic root of 40308590 is about 342.8724064799.

Adding to 40308590 its reverse (9580304), we get a palindrome (49888894).

The spelling of 40308590 in words is "forty million, three hundred eight thousand, five hundred ninety".