454191840 has 96 divisors (see below), whose sum is σ = 1589686560. Its totient is φ = 121116672.

The previous prime is 454191791. The next prime is 454191841. The reversal of 454191840 is 48191454.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 454191795 and 454191804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454191841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48249 + ... + 56888.

It is an arithmetic number, because the mean of its divisors is an integer number (16559235).

Almost surely, 2^454191840 is an apocalyptic number.

454191840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

454191840 is an abundant number, since it is smaller than the sum of its proper divisors (1135494720).

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

454191840 is a wasteful number, since it uses less digits than its factorization.

454191840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105161 (or 105147 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 454191840 is about 21311.7770258606. Note that the first 3 decimals coincide. The cubic root of 454191840 is about 768.6815239423.

The spelling of 454191840 in words is "four hundred fifty-four million, one hundred ninety-one thousand, eight hundred forty".