40434540 has 48 divisors (see below), whose sum is σ = 116874240. Its totient is φ = 10434240.

The previous prime is 40434539. The next prime is 40434553. The reversal of 40434540 is 4543404.

It is a self number, because there is not a number n which added to its sum of digits gives 40434540.

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, 9010 + ... + 12729.

It is an arithmetic number, because the mean of its divisors is an integer number (2434880).

Almost surely, 2^40434540 is an apocalyptic number.

It is an amenable number.

40434540 is an abundant number, since it is smaller than the sum of its proper divisors (76439700).

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

40434540 is a wasteful number, since it uses less digits than its factorization.

40434540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21782 (or 21780 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 40434540 is about 6358.8159275135. The cubic root of 40434540 is about 343.2291532551.

Adding to 40434540 its reverse (4543404), we get a palindrome (44977944).

The spelling of 40434540 in words is "forty million, four hundred thirty-four thousand, five hundred forty".