40235730 has 32 divisors (see below), whose sum is σ = 101649600. Its totient is φ = 10164672.

The previous prime is 40235729. The next prime is 40235747. The reversal of 40235730 is 3753204.

It is a self number, because there is not a number n which added to its sum of digits gives 40235730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34725 + ... + 35864.

It is an arithmetic number, because the mean of its divisors is an integer number (3176550).

Almost surely, 2^40235730 is an apocalyptic number.

40235730 is an abundant number, since it is smaller than the sum of its proper divisors (61413870).

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

40235730 is a wasteful number, since it uses less digits than its factorization.

40235730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70618.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 40235730 is about 6343.1640369771. The cubic root of 40235730 is about 342.6656949527.

Adding to 40235730 its reverse (3753204), we get a palindrome (43988934).

The spelling of 40235730 in words is "forty million, two hundred thirty-five thousand, seven hundred thirty".