450240040 has 32 divisors (see below), whose sum is σ = 1013800680. Its totient is φ = 179960832.

The previous prime is 450240023. The next prime is 450240061. The reversal of 450240040 is 40042054.

It can be written as a sum of positive squares in 4 ways, for example, as 225060004 + 225180036 = 15002^2 + 15006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62884 + ... + 69676.

Almost surely, 2^450240040 is an apocalyptic number.

450240040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450240040 is an abundant number, since it is smaller than the sum of its proper divisors (563560640).

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

450240040 is a wasteful number, since it uses less digits than its factorization.

450240040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8461 (or 8457 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 450240040 is about 21218.8604783575. The cubic root of 450240040 is about 766.4456636669.

Adding to 450240040 its reverse (40042054), we get a palindrome (490282094).

The spelling of 450240040 in words is "four hundred fifty million, two hundred forty thousand, forty".