454000640 has 128 divisors (see below), whose sum is σ = 1160755920. Its totient is φ = 169869312.

The previous prime is 454000639. The next prime is 454000699. The reversal of 454000640 is 46000454.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×454000640² = 412233162240819200, 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 7 ways as a sum of consecutive naturals, for example, 2785199 + ... + 2785361.

Almost surely, 2^454000640 is an apocalyptic number.

454000640 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 454000640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580377960).

454000640 is an abundant number, since it is smaller than the sum of its proper divisors (706755280).

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

454000640 is an equidigital number, since it uses as much as digits as its factorization.

454000640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 454000640 is about 21307.2907710014. The cubic root of 454000640 is about 768.5736454919.

The spelling of 454000640 in words is "four hundred fifty-four million, six hundred forty", and thus it is an aban number.