450681040 has 20 divisors (see below), whose sum is σ = 1047833604. Its totient is φ = 180272384.

The previous prime is 450681029. The next prime is 450681097. The reversal of 450681040 is 40186054.

It can be written as a sum of positive squares in 2 ways, for example, as 302620816 + 148060224 = 17396^2 + 12168^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×450681040² = 406226799630963200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816677 + ... + 2816836.

Almost surely, 2^450681040 is an apocalyptic number.

450681040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450681040 is an abundant number, since it is smaller than the sum of its proper divisors (597152564).

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

450681040 is a wasteful number, since it uses less digits than its factorization.

450681040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633526 (or 5633520 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 450681040 is about 21229.2496334656. The cubic root of 450681040 is about 766.6958207775.

The spelling of 450681040 in words is "four hundred fifty million, six hundred eighty-one thousand, forty".