40035240 has 96 divisors (see below), whose sum is σ = 148711680. Its totient is φ = 9150336.

The previous prime is 40035181. The next prime is 40035241. The reversal of 40035240 is 4253004.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (40035241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5424 + ... + 10463.

It is an arithmetic number, because the mean of its divisors is an integer number (1549080).

Almost surely, 2^40035240 is an apocalyptic number.

40035240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40035240 is an abundant number, since it is smaller than the sum of its proper divisors (108676440).

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

40035240 is a wasteful number, since it uses less digits than its factorization.

40035240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15911 (or 15904 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40035240 is about 6327.3406736164. The cubic root of 40035240 is about 342.0955924433.

Adding to 40035240 its reverse (4253004), we get a palindrome (44288244).

The spelling of 40035240 in words is "forty million, thirty-five thousand, two hundred forty".