40340330 has 16 divisors (see below), whose sum is σ = 72704520. Its totient is φ = 16115712.

The previous prime is 40340329. The next prime is 40340347. The reversal of 40340330 is 3304304.

It can be written as a sum of positive squares in 4 ways, for example, as 39150049 + 1190281 = 6257^2 + 1091^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40340299 and 40340308.

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, 7706 + ... + 11834.

Almost surely, 2^40340330 is an apocalyptic number.

40340330 is a deficient number, since it is larger than the sum of its proper divisors (32364190).

40340330 is a wasteful number, since it uses less digits than its factorization.

40340330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 40340330 is about 6351.4037818422. The cubic root of 40340330 is about 342.9623783277.

Adding to 40340330 its reverse (3304304), we get a palindrome (43644634).

The spelling of 40340330 in words is "forty million, three hundred forty thousand, three hundred thirty".