40512450 has 96 divisors (see below), whose sum is σ = 112349952. Its totient is φ = 9576000.

The previous prime is 40512419. The next prime is 40512457. The reversal of 40512450 is 5421504.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40512457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70665 + ... + 71235.

It is an arithmetic number, because the mean of its divisors is an integer number (1170312).

Almost surely, 2^40512450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40512450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56174976).

40512450 is an abundant number, since it is smaller than the sum of its proper divisors (71837502).

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

40512450 is a wasteful number, since it uses less digits than its factorization.

40512450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40512450 is about 6364.9391198974. The cubic root of 40512450 is about 343.4494585245.

Adding to 40512450 its reverse (5421504), we get a palindrome (45933954).

The spelling of 40512450 in words is "forty million, five hundred twelve thousand, four hundred fifty".