40403340 has 48 divisors (see below), whose sum is σ = 125700960. Its totient is φ = 10774080.

The previous prime is 40403317. The next prime is 40403369. The reversal of 40403340 is 4330404.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 36871 + ... + 37950.

It is an arithmetic number, because the mean of its divisors is an integer number (2618770).

Almost surely, 2^40403340 is an apocalyptic number.

It is an amenable number.

40403340 is an abundant number, since it is smaller than the sum of its proper divisors (85297620).

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

40403340 is a wasteful number, since it uses less digits than its factorization.

40403340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74839 (or 74831 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40403340 is about 6356.3621671519. The cubic root of 40403340 is about 343.1408499949.

Adding to 40403340 its reverse (4330404), we get a palindrome (44733744).

The spelling of 40403340 in words is "forty million, four hundred three thousand, three hundred forty".