40240340 has 48 divisors (see below), whose sum is σ = 100783872. Its totient is φ = 13195776.

The previous prime is 40240339. The next prime is 40240351. The reversal of 40240340 is 4304204.

It is a congruent number.

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, 3029 + ... + 9468.

It is an arithmetic number, because the mean of its divisors is an integer number (2099664).

Almost surely, 2^40240340 is an apocalyptic number.

It is an amenable number.

40240340 is an abundant number, since it is smaller than the sum of its proper divisors (60543532).

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

40240340 is a wasteful number, since it uses less digits than its factorization.

40240340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12536 (or 12534 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40240340 is about 6343.5274098880. The cubic root of 40240340 is about 342.6787814020.

Adding to 40240340 its reverse (4304204), we get a palindrome (44544544).

The spelling of 40240340 in words is "forty million, two hundred forty thousand, three hundred forty".