40507040 has 96 divisors (see below), whose sum is σ = 111404160. Its totient is φ = 13630464.

The previous prime is 40507021. The next prime is 40507067. The reversal of 40507040 is 4070504.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 65774 + ... + 66386.

It is an arithmetic number, because the mean of its divisors is an integer number (1160460).

Almost surely, 2^40507040 is an apocalyptic number.

40507040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40507040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55702080).

40507040 is an abundant number, since it is smaller than the sum of its proper divisors (70897120).

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

40507040 is a wasteful number, since it uses less digits than its factorization.

40507040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 40507040 is about 6364.5141212822. The cubic root of 40507040 is about 343.4341698558.

Adding to 40507040 its reverse (4070504), we get a palindrome (44577544).

The spelling of 40507040 in words is "forty million, five hundred seven thousand, forty".